UHF transmitters SMV25

Miniature UHF transmitter for use in a room or vehicle, This voice activated transmitter will transmit conversations to a distant receiver.With our Automatic Gain Control system it will pick up a whisper 40 feet away from the transmitter microphone as clearly as loud speech near it.Exceptional audio quality.FeaturesUltra miniature size.CR2450 Lithium battery.Voice activation system starts transmission only on voice signal detection to maximize battery lifetime up to 2000 hours.Shock resistant indestructible design.Extremely sensitive built-in microphone.Automatic microphone gain control.Crystal frequency control.Technical dataSize: 25x25x3.5mm (1"x1"x0.14") without battery25x25x8.5mm (1"x1"x0.34") including batteryRange: 500 meters (1700 feet) in open field200 meters (700 feet) in a cityPower requirement: 2.2 - 3 VBattery type: CR2450 (DL2450 compatible)Battery lifetime: 50 h in transmit mode2000 h in standby modeOutput power: 5 mW (0.1 - 50 mW on demand)Frequency: 433 - 434 MHz (300 - 916 MHz on demand)Modulation type: NFMOperating temperature: -20 to +60