Is the alarm connected to the mobile phone dead?

Power failure alarm can be divided into remote alarm and on-site alarm.

1. Remote alarm means that the alarm sends alarm information through the home fixed telephone or mobile phone number and the host of the power failure alarm or directly dials the owner's phone. This requires buying a phone card or installing a telephone line.

2. On-site alarm, that is to say, when there is a power failure, the power failure alarm can flash the horn and indicator light on site to remind the user that there is a power failure and a standby power supply is needed. At present, more and more field alarms are used in farms, cold storage, computer rooms and other places.

It is best to choose a plug-and-play alarm for power failure, which can be used when plugged in, which is convenient. They use the French power failure alarm in Guangzhou, with a blue shell and plug and play. Also known as power failure alarm, there is a horn to remind you of power failure or incoming call, and the price is around 70-80, which is not expensive. The key is to find a good and stable one.