If the person answering the call wishes to allow access, they simply release the on-board relay by pressing the button on the handset. This system provides two-way voice, caller ID, allowing known numbers to call the device. When the call arrives, it is immediately discarded, and if the number is known, the door is opened.
Ideal for mobile phones, so up to 400 users can operate the gates this way. A reusable battery can be connected internally for operation and alarms during a power outage, and the battery will automatically fail when the normal power supply is working again. It also alerts if the battery is low. Use a remote solar emergency telephone call point for GSM. Dial the number when the user presses the call button.
Vandal-resistant design, rugged stainless steel call point with flexible polycarbonate solar panels that won't break. The front panel is installed without screws and is easy to install. Dual relay output for easy control of door openers or alarm components. Press the remote control relay output by pressing the button while talking to the visitor.The front panel uses the innovative KEY LOCK for a safer design. Unlimited range of wireless GSM intercom, button and visitor call. Material: Stainless Steel GSM Frequency. 1 x USB Data Cable.
1 x USB Program Adapter. Instead of leaving negative/neutral feedback or opening a dispute. Our listing price includes the value of goods, packaging cost, and export. Please check with your country's. We will reply your message within 48 hours.If you do not receive our reply within 48 hours, pls. Post a message again because sometimes our message system may block some emails.
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The item "DC12V GSM Audio Caling Intercom Door Access Controller Waterproof With Keys" is in sale since Friday, January 15, 2021. This item is in the category "Home & Garden\Home Improvement\Home Security\Door Entry Systems & Intercoms". The seller is "coolstoreonline" and is located in Shenzhen. This item can be shipped worldwide.