EPH Transceiver

Your TR1 TR2V2 is used to send a wireless signal from one location to another when running 
cables is difficult, expensive or otherwise not an option.
The product comprises of two devices: a TR1V2 and a TR2V2. 
Both devices are pre-paired during manufacturing for user convenience.
When 230V is applied to the Live in terminal of the TR1V2, the COM and Live out connection 
closes which sends voltage from Live out on the TR2V2.
It is possible to send a wireless signal in one direction or both.  
When a signal is sent from the TR1V2 to the TR2V2 a green light will activate on the TR2V2.
When the TR2V2 sends a signal to the TR1V2 a green light will activate on the TR1V2.
Common uses include sending a signal from a programmer to a boiler or hot water cylinder 
which are in a different locations. These are also used to control pump overrun and many other 
applications.
It is possible to have more than one set of TR1 TR2V2 where required.