The range of transmitters have a double push radio channel for HUA. Powered by lithium battery technology, for a longer working life cycle.
The 705 gives you the flexibility of a secondary programmable channel whilst the 706 has a built-in tilt sensor for 'man down'. 705 has a double push lock, belt mounted, secondary programmable channel.
Scantronic Narrow Band Receiver:
Scantronic & Menvier Radio Security Expanders: