Attention: Welcome to my shop! We ship the product from China, the delivery time is 7-14 days! product descriptionFrame rate 15-25 fpsSignal Strength Indication 4 LevelsVolume control 5 levelsIntercom Two-way, half-duplexVoice control function, there is a sound to automatically open the screenOne receiver and multiple transmitters, one receiver can be equipped with four transmitters, and the display can be switched.LCD size 2.4 inches 960 x 240 RGB color LCDTransmission security requires mutual code to be usedb: electrical parametersLCD receiving voltage DC: 5V/1000MA; Battery: built-in 3.6V/1000MAH lithium batteryTransmission frequency 2.4GHz ISM BandHow Wireless Works FHSSTransmit power 19dBm CW modeTransmission rate 3MbpsTransmission distance Open area: about 200 metersWorking current (transmitting and receiving) TX: 400mA MAX, RX: 400mA MAX, usually standby 160MA without charging currentCharging current 120-200MAAudio sample rate 16KAudio frequency response range 120Hz-3KHzVoice control start control level 35- 50dB MIC InputCamera resolution 300,000Image resolution 320 x 240QVGAVideo transfer rate 15-25FPSTotal Harmonic Distortion Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.