Wireless Smart LCD Keyboard HEYI HY-305E

– Power: DC 5V/1A (Mirco USB).

– Battery: 3.7V/900mAh.

– Alarm current: 50mA.

– Wireless & Wired: Wireless 433Mhz.

– Distance: 250m (in the open area).

– Alarm Sound: 70dB (in 1 meter).

– Operating temperature: -10°C ~ +50°C.

– Humidity: <80% (RH).

– Dimension (H x W x L): 28.1 x 92 x 140 mm.