GSM battery intercom with emergency SOS alarm call button with 2-channel door opening relay 12v 24v acdc GSM-HELP

GSM battery intercom with emergency SOS alarm call button with 2-channel door opening relay
Emergency call point access control system, GSM-HELP power off alarm, hands-free audio intercom

Characteristic:
1. With two alarm input ports, can provide emergency alarms to some places, and you can connect the existing sensors or any other relay output type sensors to it for security alarms.
2. Built-in backup rechargeable battery (3.7V, 1000mA), used for power failure alarm. Via the call button, call the internal number saved for the intercom. The operating voltage is AC/DC12 - 24V. Keyed lock for secure installation and easy maintenance. Rainproof design of the whole box. GSM‑HELP is not only a simple GSM emergency call phone, but also can be used as a “site monitoring function” and security alarm box.
3. Very simple to install and connect, settings are started by SMS. 5 call numbers can be stored in advance, if the first number cannot be connected, the number will be called in sequence. Not only can you make a call via the button, but you can also set a specific number to make an active call, 3 working modes, call answering mode, monitoring mode, and direct call connection mode.
4. The internal rechargeable battery can be connected to work when the power is turned off. The battery will be automatically charged when normal power works again. If the battery is low, it will also send an alarm.
5. Very suitable for private homes or public emergency calls, suitable for unmanned taxi offices, taxi calling site, door phones for talking to visitors or any outdoor places. The user only needs to press the button, then the box will dial the number (two numbers are preset in the memory), and then you can pick up the phone to talk to the visitor.

Specification:
Item Type: Hands-Free Audio Intercom Alarm
Material: hard ABS plastic
Black color
Input Power: AC/DC12-24V
GSM frequency: 850/900/1800/1900MHz
Battery capacity: 1000mAh (built-in)
How to use:
1. The product requires wiring.
2. Insert a 2G mobile phone card (not include SIM card) into the product.
3. Pair and connect with mobile phone.
4. The product can be controlled by mobile phone.

Package List
1 x Hands-Free Audio Intercom Alarm
1 x Antenna
2 x Keys
1 x Manual