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<title><![CDATA[EC21 Product Catalogs - amplified volume control]]></title>
<link><![CDATA[https://www.ec21.com/ec-market/amplified volume control.html]]></link><item>
<title><![CDATA[Car Audio Amplifier Board Full PCBA Manufacturing Service]]></title><link><![CDATA[https://tecoopcba.en.ec21.com/Car-Audio-Amplifier-Board-Full--12056085_12056090.html]]></link><description><![CDATA[volume production, our flexible manufacturing capabilities can meet your specific needs.
Cost-Effective Solutions: Benefit from competitive pricing and optimized production processes that reduce wast]]></description><pubDate><![CDATA[20250708]]></pubDate></item>
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<title><![CDATA[Wooden Case Controller]]></title><link><![CDATA[https://fjz7352582.en.ec21.com/Wooden-Case-Controller--2084508_12045880.html]]></link><description><![CDATA[control is ideal for use with:
Televisions: Control your TV&apos;s power, volume, channel selection, and other functions with ease.
High-End Audio Systems: Manage your audio settings, including volume and]]></description><pubDate><![CDATA[20250228]]></pubDate></item>
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<title><![CDATA[Donner DST 152R Electric Guitar, 39 Beginner Electric Guitar Kit, HSS Pickup with Coil Split]]></title><link><![CDATA[https://8645776567.en.ec21.com/Donner-DST-152R-Electric-Guitar--11547388_12006122.html]]></link><description><![CDATA[volume controls for choosing, it is suitable for different music styles
[Coil Split Function] Equipped with a PUSH-PULL switch circuit, the humbucking pickup can be split to release classic single-co]]></description><pubDate><![CDATA[20240918]]></pubDate></item>
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<title><![CDATA[Rockchip RK3288 Android Motherboard Quad Core ARM Cortex A17 1.8GHz 4K Embedded Industrial Board]]></title><link><![CDATA[https://htxcd.en.ec21.com/Rockchip-RK3288-Android-Motherboard-Quad--10731254_11976402.html]]></link><description><![CDATA[amplifier circuit
Other I/O
1x TF Card slot
1x MIPI Camera Interface (4 Lanes 30Pin header)
4x GPIO via pin header
1x Buttons (volume plus/minus button, reset button, power button)
2x LEDs (red, blue]]></description><pubDate><![CDATA[20240729]]></pubDate></item>
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<title><![CDATA[Active Noise Reduce Shooting Hearing Protector]]></title><link><![CDATA[https://zhsafetech.en.ec21.com/Active-Noise-Reduce-Shooting-Hearing--11951558_11951563.html]]></link><description><![CDATA[volume control button is designed to adjust the amplification effection based on your needs to adapt to different occasions(Most of noise cancelling earmuffs have no such amplification function). It ]]></description><pubDate><![CDATA[20240614]]></pubDate></item>
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<title><![CDATA[LAG-S200 Ladle Slag Detection System (Vibration Type)]]></title><link><![CDATA[https://zfy8888.en.ec21.com/LAG-S200-Ladle-Slag-Detection--11626642_11626722.html]]></link><description><![CDATA[volume is accurately set, the output control function is powerful. It has excellent performance in technical indicators such as the sensor service life and sensor usage times.
(3) The sensor is insta]]></description><pubDate><![CDATA[20240531]]></pubDate></item>
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<title><![CDATA[WEET WTP 3309 0.5W 9mm Cermet Consumer Trimming Potentiometer]]></title><link><![CDATA[https://weetrimpot.en.ec21.com/WEET-WTP-3309-0.5W-9mm--11929237_11938390.html]]></link><description><![CDATA[volume and tone in audio devices. 
Lighting equipment: Adjustable potentiometers can also be used to control the brightness of lighting equipment. 
Power circuit: Adjustable potentiometers can also b]]></description><pubDate><![CDATA[20240517]]></pubDate></item>
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<title><![CDATA[Immunohistochemistry Stainer]]></title><link><![CDATA[https://amos119.en.ec21.com/Immunohistochemistry-Stainer--11883219_11929603.html]]></link><description><![CDATA[controls various parameters such as incubation time, temperature, and reagent volumes, resulting in precise and reliable immunohistochemical staining.
Advantages of Using an Automated Immunohistochem]]></description><pubDate><![CDATA[20240425]]></pubDate></item>
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<title><![CDATA[QG-9250AT 250W 6 Zones Integrated Power Amplifier]]></title><link><![CDATA[https://vertexaudio0423.en.ec21.com/QG-9250AT-250W-6-Zones--11928344_11928428.html]]></link><description><![CDATA[Specification:
◆ Two microphones, two line inputs, six zone independent control, each capable of carrying 75% of the total power, and each volume can be independently controlled.
Six independent vo]]></description><pubDate><![CDATA[20240423]]></pubDate></item>
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<title><![CDATA[Dual UHF PLL Wireless Microphone with Bluetooth, Mixer, Optical Output]]></title><link><![CDATA[https://proaudio2010.en.ec21.com/Dual-UHF-PLL-Wireless-Microphone--11326379_11637099.html]]></link><description><![CDATA[amplifier or soundbar
Volume control and 2-band equalizer for music
Individual volume controls for microphones
Tone and echo level controls for microphones
Two UHF PLL wireless microphones with 2X48 ]]></description><pubDate><![CDATA[20220911]]></pubDate></item>
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<title><![CDATA[CNC Hydraulic Press]]></title><link><![CDATA[https://tianyueqpt.en.ec21.com/CNC-Hydraulic-Press--11543427_11543429.html]]></link><description><![CDATA[volume is appropriate. Meanwhile, the four column press
shows the entire pressing curve of force and displacement to achieve the goal of controlling the quality. What’s more, with the strengthened ]]></description><pubDate><![CDATA[20220315]]></pubDate></item>
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<title><![CDATA[UE-340 Four Channel Fixed Frequency Wireless Handle Microphone]]></title><link><![CDATA[https://nuoxun.en.ec21.com/UE-340-Four-Channel-Fixed--11551080_11551561.html]]></link><description><![CDATA[volume display lamp coverEnhanced digital noise suppression circuit, the noise output is zero in standby mode.Wide frequency response range, ultra-low distortion, strong bass, bright midrange and cle]]></description><pubDate><![CDATA[20220408]]></pubDate></item>
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<title><![CDATA[YAQIN MC-13S Push-Pull Integrated Stereo Tube Amplifier,Output Power 40Wx2, Tubes:2x12AX7, 4xEL34...]]></title><link><![CDATA[https://shentai2022.en.ec21.com/YAQIN-MC-13S-Push-Pull--11679732_11680094.html]]></link><description><![CDATA[volume control and the input switch are first rate
* More affordable Price ：Yaqin MC-13S can be considered one of the best class A integrated amplifiers, namely the best integrated amplifier under ]]></description><pubDate><![CDATA[20231218]]></pubDate></item>
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<title><![CDATA[FN-M2A PIR Motion Sesnor Audio Player Module Talking Motion Sensor Module PCBA]]></title><link><![CDATA[https://flyrontech.en.ec21.com/FN-M2A-PIR-Motion-Sesnor--9436764_10317585.html]]></link><description><![CDATA[amplifier, and able to directly drive a 1-3 watts (4-8 ohms) speaker.8. Adjustable 6-level volume through pressing the volume button repeatedly.9. Equipped with a 3.5mm audio jack that is able to be ]]></description><pubDate><![CDATA[20231020]]></pubDate></item>
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<title><![CDATA[Dynisco Pressure Transmitter Injection Molding]]></title><link><![CDATA[https://contranspower.en.ec21.com/Dynisco-Pressure-Transmitter-Injection-Molding--9929422_9929979.html]]></link><description><![CDATA[amplified transmitters eliminate the need for external signal conditioning. All models can interface directly with distributed control systems, PLCs, computers and similar high level control devices.]]></description><pubDate><![CDATA[20200828]]></pubDate></item>
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<title><![CDATA[USB Gooseneck Computer Microphone YG252]]></title><link><![CDATA[https://4453811988.en.ec21.com/USB-Gooseneck-Computer-Microphone-YG252--10264679_10272043.html]]></link><description><![CDATA[control panel design, can control the microphone ON/OFF, loudspeaker MUTE and sound volume. 
Features 
The mic/spkr unit composed with base-unit, gooseneck microphone, usb cable and other accessories]]></description><pubDate><![CDATA[20170109]]></pubDate></item>
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<title><![CDATA[7inch Capacitive Screen Car Radio DVD for BENZ SLK Class with GPS 3G WiFi]]></title><link><![CDATA[https://winca2017.en.ec21.com/7inch-Capacitive-Screen-Car-Radio--10482847_10555109.html]]></link><description><![CDATA[Volume, Rear view ruler 
- Extra settings: choose Playing music automatically and DVR Storage locations 
- Amplifier: Rock/Pop/Jazz/Classic/Flat/Voice/Custom 
- Steering Wheel Control: Yes 
- Factory]]></description><pubDate><![CDATA[20171008]]></pubDate></item>
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<title><![CDATA[PA5500 5channel 500W/100V/Channel PA Amplifier Array]]></title><link><![CDATA[https://digiamp.en.ec21.com/PA5500-5channel-500W-100V-Channel--10593097_10596243.html]]></link><description><![CDATA[control system, delivery out power auto limited.
10.Class D Balance To Balance technology supported, high switching frequency, lower EMI, better amplified signal output.
11.monitor speaker inside, mo]]></description><pubDate><![CDATA[20171127]]></pubDate></item>
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<title><![CDATA[Intelligent Actuator]]></title><link><![CDATA[https://szbanyan.en.ec21.com/Intelligent-Actuator--10654351_10654366.html]]></link><description><![CDATA[control module technology is called electronic brake circuit with high precision and high reliable performance, which can shut off in a twinkle. 
★Miniature size 
With small volume, light weight, t]]></description><pubDate><![CDATA[20180129]]></pubDate></item>
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<title><![CDATA[Secondary Current Injection Relay Test Set 3 Phase Protection Relay Tester]]></title><link><![CDATA[https://kill235jklh.en.ec21.com/Secondary-Current-Injection-Relay-Test--10544358_10544954.html]]></link><description><![CDATA[Volume weight: 470 &amp;times; 405 &amp;times; 185 (mm) about 20Kg 
11.Power source: AC220V &amp;plusmn; 10% 50Hz 10A
What is the main features of our 3 Phase Relay Protection Tester ?
1. HZJD-I Six-phase curren]]></description><pubDate><![CDATA[20180509]]></pubDate></item>
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<title><![CDATA[FK500Y Podium Loudspeaker, Amplifier, LED Light, Auto Lift, Touch AIO PC 2]]></title><link><![CDATA[https://bjshunxingkobe.en.ec21.com/FK500Y-Podium-Loudspeaker-Amplifier--10698629_10704798.html]]></link><description><![CDATA[Controller system: &quot;Integrated control function: projector switch, projector screen lift, volume ,one key switch&quot; 
Electric lifting stand: Monitor angle can be adjusted electrically 
Keyboard tray: A]]></description><pubDate><![CDATA[20180412]]></pubDate></item>
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<title><![CDATA[240W Public Address System Bluetooth 6 Zone Amplifier for School]]></title><link><![CDATA[https://artonephile.en.ec21.com/240W-Public-Address-System-Bluetooth--10640730_10640731.html]]></link><description><![CDATA[volume control);
Mic1-3, AUX1-2, MP3, treble, bass, and master volume control;
Chime, bell and EVAC reminder;
RCA audio output;
VOX mute for MIC1, DC trigger for EVAC;
Shortcircuit, over heat, over l]]></description><pubDate><![CDATA[20220715]]></pubDate></item>
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<title><![CDATA[Bluetooth Speaker, FM Radio,Wireless Charging, Romatherapy Case, Smart Wireless Bluetooth Speaker]]></title><link><![CDATA[https://vals2019.en.ec21.com/Bluetooth-Speaker-FM-Radio--11348935_11348944.html]]></link><description><![CDATA[Control Method
Touch (Volume +- Long press)
Charging mouth
Type-C
Music time
4Hours
Charging time
3Hours
Speaker
RQ200J1 45MM 4Ω 5W
FM Radio
ToggleButton&quot;O&quot;,Long press for 3 second,Automatic switcho]]></description><pubDate><![CDATA[20211020]]></pubDate></item>
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<title><![CDATA[43 Inch Hanging Dual Screen Advertising Machine  High Quality Digital Signage Manufacturer]]></title><link><![CDATA[https://oleddigital.en.ec21.com/43-Inch-Hanging-Dual-Screen--10985272_10985283.html]]></link><description><![CDATA[volume adjustment, download speed limit, power on / off, remote update, touch management, etc .;
System management: log management, view instruction execution status, modify password, user authority ]]></description><pubDate><![CDATA[20200527]]></pubDate></item>
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<title><![CDATA[Multipurpose Fiber Feeder for Road Construction]]></title><link><![CDATA[https://jiewoo01.en.ec21.com/Multipurpose-Fiber-Feeder-for-Road--11169841_11169872.html]]></link><description><![CDATA[volume fan, which ensures the rapid release
of materials and distributed in the asphalt mixture aggregate evenly. 
1.2 Weighing control system: for pellets, the
weighing control system adopts a high-]]></description><pubDate><![CDATA[20200610]]></pubDate></item>
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<title><![CDATA[Siren Amplifier]]></title><link><![CDATA[https://novavehicle.en.ec21.com/Siren-Amplifier--11679253_11692320.html]]></link><description><![CDATA[2 Lighting controller Output, Max ouput 10A
4. With volume adjustment function
5. Frequency 420Hz-1780Hz
6. Operating Temperature Range: 0° C to +55° C
7. Size of mainframe:14(16)x11.6x5cm
]]></description><pubDate><![CDATA[20221214]]></pubDate></item>
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<title><![CDATA[Long Range Acoustic Device]]></title><link><![CDATA[https://pmtc.en.ec21.com/Long-Range-Acoustic-Device--5841462_5754200.html]]></link><description><![CDATA[Volume(SPL) 95dB at 1m backside of the device
Communications Range Hailing : SPL Over 80dB, 1kHz at 1Km
Voice : Over 70dB at 2Km 
Frequency Range : 200Hz - 6kHz
Amplifier Output : 1000 Watt 
Acoustic]]></description><pubDate><![CDATA[20121231]]></pubDate></item>
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<title><![CDATA[All in One Built-in GPS +FM/AM/AMP+TV+USB+MP3/MPEG4+DIVX+VGA]]></title><link><![CDATA[https://xmhanson.en.ec21.com/All-in-One-Built-in--1131941_616744.html]]></link><description><![CDATA[C-bus system control
&amp;#9679; DVD/VCD/CD changer control
&amp;#9679; CCD camera input
&amp;#9679; Volume/Treble/Bass/Balance/Fader controls
&amp;#9679; Real time display
&amp;#9679; Card size remote]]></description><pubDate><![CDATA[20060922]]></pubDate></item>
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<title><![CDATA[Advertising Media Player Box]]></title><link><![CDATA[https://sjdmp.en.ec21.com/Advertising-Media-Player-Box--8409579_8412592.html]]></link><description><![CDATA[volume control 9: Auto-copying files from USB 10: Cf SD card USB Device play 11: Play Record, Time volume control 12: Time control Insert-playing[create folder &apos;AD &apos;and create insert file in this fol]]></description><pubDate><![CDATA[20130819]]></pubDate></item>
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<title><![CDATA[Aluminum PCB]]></title><link><![CDATA[https://ronghuaindustry.en.ec21.com/Aluminum-PCB--11791188_11794567.html]]></link><description><![CDATA[amplifier filter electrical appliances. 
4. Office Automation Equipment:Electric driver, etc. 
5. Car:Electronic regulator igniter power controller, etc. 
6. Computer:CPU board Flee drive, power devi]]></description><pubDate><![CDATA[20230521]]></pubDate></item>
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<title><![CDATA[High Frequency PCB Built On Shengyi SCGA-500 GF265 PTFE with Glass Reinforced RF Circuit Materials]]></title><link><![CDATA[https://bcco.en.ec21.com/High-Frequency-PCB-Built-On--10882619_11042921.html]]></link><description><![CDATA[volume manufacturing requirements where a balance of cost and performance are of paramount importance.
Features 
1. 
Consistent and Stable Dk/Df over Frequency and Temperature
2. 
Low Dielectric Loss]]></description><pubDate><![CDATA[20230113]]></pubDate></item>
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<title><![CDATA[Podium]]></title><link><![CDATA[https://ekps.en.ec21.com/Podium--4245435_4252632.html]]></link><description><![CDATA[control operation of the electromotion screen and Audio volume.
* Characteristics 
- Integrated control system for beam projector, computer, Air conditioner and variety of external devices
- Sub moni]]></description><pubDate><![CDATA[20100409]]></pubDate></item>
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<title><![CDATA[17inch Bus LCD Advertising Player]]></title><link><![CDATA[https://koncka.en.ec21.com/17inch-Bus-LCD-Advertising-Player--4835155_4856406.html]]></link><description><![CDATA[controller.
Packing size: 530mm*440mm*180mm
Net weight: about 6.5kg Gross weight: about 7.8kg Volume Weight: 8.5kg
Applicable Fields: Various forms of transportation, like bus, train, subway etc.
If ]]></description><pubDate><![CDATA[20101028]]></pubDate></item>
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<title><![CDATA[Outdoor Movable Speaker]]></title><link><![CDATA[https://creatleather.en.ec21.com/Outdoor-Movable-Speaker--5878123_5952139.html]]></link><description><![CDATA[Amplifier RMS Power: 40W 
Amplifier Peak Dynamic Power 70W
Driver: one 12 inch woofer, one pc of 4 inch tweeters. 
Control Panel : volume, bass, treble, echo, karaoke function.
Unit: One pc speaker
A]]></description><pubDate><![CDATA[20111029]]></pubDate></item>
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<title><![CDATA[OEM Newly Designed 4.3-inch Smart HiFi Smart Wall Amplifier for Apartment House]]></title><link><![CDATA[https://cassie01.en.ec21.com/OEM-Newly-Designed-4.3-inch--11833877_11834391.html]]></link><description><![CDATA[Installation:
Connecting wire category 
Power cord: 1-2 square millimeter single strand copper core wire. 
Audio cable (two-core shielded cable: commonly known as microphone cable): RVVP2 × 0.5RVVP2]]></description><pubDate><![CDATA[20230816]]></pubDate></item>
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<title><![CDATA[X Axis Piezo Nanopositioning Stage with 100um Travel Range From CoreMorrow]]></title><link><![CDATA[https://xmtkj2012.en.ec21.com/X-Axis-Piezo-Nanopositioning-Stage--6780234_7534073.html]]></link><description><![CDATA[P11 is a small-volume 1~3 axes piezo nanopositioning stage. It adopts a nofriction
flexible hinge guiding mechanism and amplified-drive mechanism to
ensure 100μm displacement. Closed-loop version co]]></description><pubDate><![CDATA[20220907]]></pubDate></item>
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<title><![CDATA[Refence]]></title><link><![CDATA[https://flymoon21.en.ec21.com/Refence--9790766_10400940.html]]></link><description><![CDATA[amplified. Unlike regular antibiotics Lefens does no induce resistance and acts similarly to nonabsorbent antibiotics.
4. Cell membrane function strengthening 
Many important physiological functions ]]></description><pubDate><![CDATA[20170508]]></pubDate></item>
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<title><![CDATA[CATV Mini Optic Node for FTTH]]></title><link><![CDATA[https://wstina111629.en.ec21.com/CATV-Mini-Optic-Node-for--9025969_9026273.html]]></link><description><![CDATA[volume, high reliability..Aluminum alloy shell, the built-in electric AGC circuit, compact structure, external modular power supply, small volume, convenient in installation and debugging,it is an id]]></description><pubDate><![CDATA[20141226]]></pubDate></item>

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