Wirelss Enchanced Speech Privacy Activation Sign for Z2 Z4

Ports	1 - USB (service), type Micro-B (socket)
Radio channel frequency	915 MHz, ISM band
Power	5 V, 1 A via USB or from 4 replaceable AAA batteries, 1000-1100 mA · h (charging via USB)
Battery type	NiMH (Nickel-Metal-hydride) Rechargeable AAA Size
Battery charging time	1-4 C.
Mounting	Wall or tablet
Size (WxDxH)	70 x 20 x 114 mm
Weight	0,164 kg