Features:  
l Precise pulse filtering and acquisition circuit and measurement algorithm, high precision. 
l Stable, reliable and long-distance wireless data transmission.
l Ultra-low power consumption design, average power consumption ≤25uA.
l The power supply voltage detection function can warn when the battery energy is nearly exhausted.
l Anti-disconnection function after the module is started.
l Two-way communication, real-time query of the data of the acquisition module .
Power supply:
l Working voltage during metering and transmission +3.1 ~ +3.6VDC
l Emission current ≦90mA
l Data duration of one launch: ≦90ms, average launch interval: 4h
l Average working current ≦28uA
Performance parameter:  
Transmitted power  | 16dBm  | 
Visibility distance  | |
Effective baud rate  | 2400bps/38.4kps  | 
Topology network  | Point to point  | 
Voltage  | 3.1V~3.6VDC  | 
Emission current  | ≤90mA  | 
Sleep current  | <9uA  | 
Mean operating current  | ≤25uA  | 
Carrier frequency  | 921.5MHz/926.5MHz  | 
Channel  | single channel  | 
Communication mode  | bothway  | 
Bandwidth  | 50KHz/100K  | 
Operating temperature:  | -20~60℃  | 
Frequency stability  | ±5ppm  |