Honeywell / Ademco High Security Wireless Receiver - 5881ENL Wireless receiver that allows for expansion of wireless zones on Vista systems. Up to 8 zones.  

• Diversity Reception With Two Antennae.

• Remote Mounting For Best Location.

• Unique Supervision & Low Battery Indication By Point.

• Compatible With All Vista Control Panels.

• Compatible With All 5800 Series Wireless Devices.

• Operates in High Security Mode For Encrypted Devices.