1. Wireless and no wiring required. Connected up to 99 pcs of signal emitters.

2.Signal Receiving effectively around 500M without blockage.

3.Can connect more than one receiver in the same area

4.LED Display, 3 colors Displays

5.Time Display when no signal display

6. 10 sounds chosen, volumn is adjustable

7.Signal cleaner-SK302A is included

8. Size: 317*180*28mm

9. Voltage: 220V