Summary: 1.GSM and landline auto switch
2.SMS alert;voice instruction
3,Max 51 wireless sensors
4.LCD and blue back-up light, all the setting can be viewed directly on the LCD
More...
Summary: 1.GSM and landline auto switch
2.SMS alert;voice instruction
3,Max 51 wireless sensors
4.LCD and blue back-up light, all the setting can be viewed directly on the LCD
More...