JCJ511 SMS phone alarm, mainly used for collecting all kinds of alarm signals (such as leaks, smoke, temperature and humidity, infrared, etc.), and send text messages and phone dialing out alarm signals to achieve in one machine, the product itself needs with a GSM card, so that you can achieve all kinds of on-site monitoring and alarm switch signal, the product is suitable for a variety of needs remotely via SMS, place phone alarm. Base station room, factories, banks, ATM, hospitals, buildings and other major features: 1, support GSM850 / 900/1800 / 1900MHz communications network; 2, can receive up to 8 groups of stem node alarm signal can be self-programming selection normally open / normally closed contact alarm mode 3, the host automatically send a text message alerts to three phone numbers; 4, the host automatically dial three phone or fixed phone alarm start site monitoring; 5, built-in backup battery, an external power outage and power restoration SMS notification function; 1. Up to eight 2-way passive switch alarm signal. GSM 850/900/1800 / 1900MHz 3. Transmit power 1W. 3. ≤8 seconds response time data (GSM network normal state) 4. Operating power supply voltage: AC 100-240V 50 / 60Hz (optional). Total power consumption: <3W backup battery: DC 7.4V 800mA battery backup time ≥10 hours 5. Working conditions Temperature: -20 ~ + 60 ℃ Humidity: 95% RH non-condensing 6. Net Weight: 0.8Kg GW: 0.9Kg 7. Dimensions: 218mm (length) × 147mm (width) × 39mm (thickness) 8. Record Length: 10s SMS alarm manufacturers, the price of SMS alarm, SMS alarm Shaanxi, Shanxi and SMS alarm, the best SMS alarm,