Feature: 1.Realize the solar controller of wireless monitoring function 2.Support mobile phone APP,plug and play,simple setting 3.The use of high performance,low power consumption of the bluetooth special chip 4.Adopt bluetooth 4.0 and BLE technology,has the characteristics of rapid communication and strong anti-jamming capability 5.Without external power supply,power supply directly by the communication port. 6.Communication distance of up to 15 meters Model: BT-1 Input voltage: 5V-12V Standby power consumption: 0.04W Operating power consumption: 0.05W Communication distance: ≤15m Serial baud rate: Fixed baud rate 9600bps Communication mode: RS232 Port type: RJ12 Connection cable: standard network cable (parallel cable) Operating temperature: -20°C to 75°C Protection degree: IP67 Color: Black Material: PVC Package Contents: 1 x BT-1 Bluetooth module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.