http://www.ec21.com/ec-market/microphone_cctv.htmlen-usec21 Switch the receiver's channels by remote control. >380 TVL of horizontal definition.]]> LCD series. >2.5" LCD color screen, 480X234 resolution. >420 TVL of horizontal definition. >Portable]]> Switch the receiver's channels by remote control. >380 TVL of horizontal definition. >Micro-camera]]> 380 TVL of horizontal definition. >Micro-camera easy for installation. >2 cameras available]]> Switch the receiver's channels by remote control >380 TV lines of horizontal definition >4]]> LCD series. >2.5" LCD color screen, 480X234 resolution. >420 TV line of horizontal definition.]]> With BNC connector plug >4-channel available to avoid]]> Good coverture and wide angle lens > PIR detective recording and stop automatically > Detection recording]]> Good coverture and night vision > PIR detective recording and stop automatically > Detection recording]]> Good coverture and wide angle lens > PIR detective recording and stop automatically > Detection recording]]> Good coverture > PIR detective recording and stop automatically > Detection recording integrated]]>