Backup Battery & 120dB
Alarm: The upgraded device emits an alarm sound exceeding 120dB and flashes the LED indicator when it detects a high or low water level alarm, prompt reminders for emergencies. built-in backup battery allows the device to keep working even in a power outage, more flexible installation, and use
Attention & After-sales Service: Please read the user manual before use. and we are online in 7*24h, if you have any product queries please get in touch with us for prompt assistance or a replacement if needed