The Jigsaw Flood Level Alarm is a self contained, battery powered sensor which periodically reads the level of an analogue flood probe. As the level changes, it is compared with one of three configured levels to check if they have been breached. As the system detects a level breach, it connects to the server raising alerts. If no floods are detected, then the sensor will connect anyway for reassurance that the probe is operating, and to report back the battery level for system maintenance purposes.
To raise flood alarms, the probe connects to the Internet using the GSM (mobile phone) data network. The system can use SIM’s from any of the major service providers. The batteries in the system will typically last over a year, but the system reports back battery status on each connection.
The flood sensor is simple to fit, just set a centimeter or two above diurnal flow The sensor is small and unlikely to become fouled. The status of the probe is sent to a web service so that multiple users can have access to the live situation screen. The system can raise e-
The flood sensor has an analogue depth probe which can continually measure water depth with a resolution of 5mm
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