Some manholes need instant monitoring: to reduce risk of accidents or to detect intruders or simply to get immediate alert when a manhole cover is being opened, to trigger an appropriate action. This is what IOTA MHC has been designed for.
It is a robust, industrial grade device, with protection rating IP69. It is very difficult to be tampered, so one can be sure to be alerted whenever a manhole cover is opened or someone is just playing with the device to stop it from alerting you. And, what is more, it is mobile and installable in seconds.
Not certified yet
Direct buy link: http://iota-devices.com
Dimensions (in mm): 90 x 90 x 35
IP Code: IP68
Recommended operating temperature: -30° to 65° C
Dedicated - Internal
Battery life: 10 Years
Flashable Firmware: No
No connector for an additional external antenna