Model:80103 R (no display)

Power Supply：DC 5V

Working Frequency：420-450MHZ

Radio-frequency Power：0.5W

Units In One System：1-9999

Working Current：<650mA

Battery Model：18650

Standby Current：1mA

Working Temperature：-10~40°C

Wireless Range：1000 meters in open area 1st to 7th floors in the building