Wireless Intercom System Secure Interphone Handsets

Features:
Wireless audio intercom system can support 100 persons intercommunicating at most.
Using 433MHz public frequency.
Strong anti-jamming capability .
Panel with 10 number buttons, a call button and two indicator lights: power indicator light (red), operating indicator light (green).
With coding, Giving code, ID setting functions.
DC5V,or Li-ion battery power supply, Standby Current:3.5mA, Work current:400mA. 
Specifications:
Communication Distance: about 1-8 floors in building
Air transfer Rate: 256K 
Transmitting Power: < 18dBm, Receive Sensitivity: <-100
Answering Mode: Telephone
Access Control: None
Item Type: Indoor Machine
Size: 272*105*82mm
Connection Type: Wireless
Material: Wireless audio intercom
Waterproof: No
Zone Number: None
Installation: Wall Mounting
Power: Other
Samrt Home Interface: No
Samrt Home Interface: Yes
Package Included:
2 * Wireless Interphone
2 * Adapter Cable

WARRANTY

We'll refund your money if the item hasn't been delivered within 40 days after purchase. You have 2 weeks to request a refund — until day 60.
Product doesn't match the description? Contact us within 30 days after you receive it!
In case of cancellation, money will be refunded to your account within 3 days.