10 Channel Wireless Intercom System Sold Individual so you can buy as many as you like.

These are UHF and does not rely on a power point circuit they are RF.

You can pair up to 10 Units

Model: HS2

Type: Wall Mount

Size: 190 x 105 x 75 mm

Channels: 10

Talk Range : Up to 450m

50 Ring Tones

Portable Rechargeable Lithium Battery Inside

Colour: Black (White Handsets for Images)

Warranty: 1 Year

Function: Duplex

Application: Indoor Office, Home, Camping, Home to Shed

Material: ABS

Output Power: (.5W)

Certification: FCC

PRICE IS EACH

Multiples units needed to talk to each other