Bluetooth protocol: Bluetooth Specification V4.0 BLE, send and receive no byte limit,open environment and iphone 4 s can achieve 110 meters extreme distance communication.Based on TI CC2541 chipsetBluetooth class 2Industrial level SPP Bluetooth moduleIntegrated chip antennaSize: 26.7 x 13 x 2 mmIndu..
Soil moisture module is most sensitive to the ambient humidity is generally used to detect the moisture content of the soil.Module to reach the threshold value is set in the soil moisture, DO port output high, when the the soil humidity exceeds a set threshold value, the module D0 output low.The di..