Review on Solenoid Control Wireless Contact T Mobile by John Blanco

Purchased to be used as a remote switch to turn on the aircraft engine heater as well as the cabin heater. It would be 5 stars except sometimes it takes up to an hour for the switch to respond to on/off requests and sometimes it activates instantly. This may be related to the cellular connection I use for this (Tello). No complaints during the rest of the month of operation.