Features:

1. Microcomputer designed, viewable, audible, recordable, playable and autodial to send out alarm (rescue) signal
2. Select NC/NO or voltage input event-trigger according to different panel
3. Can store 4 phone numbers or cell phone numbers, each number support up to 16-digit storage and own second-class password.
4. If triggered by accident, you can always use the keyboard to stop sending rescue signal by inputting password
5. Compatible with different kinds of alarm control panels and sensors