Model number: PowerCom-EA1000 USB Stick Base Station

2.4 GHz frequency hopping spread spectrum (FHSS) transceivers. Frequency Synthesized.

One PowerCom PC3 Base Station receive per 400 keypads of the same channel identity in a room.

Check Powercom PC3 page for more info
Price: Call for Price
Weight: 3 oz.
Dimensions: 3.6in. × 1.22in. × 0.5in.