The 4-button remote handset/transmitter is compatible with the 903000030 remote control receiver (sold separately). They are for use with Rinnai Single Stage SE and SE+ Patio Heaters. Each heater you have installed requires its own receiver, while a transmitter, such as this 4-button handset, can control up to 4 units or heaters in up to 4 zones. A receiver and handset is required for operation. The hand held 4-button transmitter (903000031) is required for master programming* of receiver or keypad (903000032).
Multiple receivers can be programmed to one transmitter channel and multiple heaters can be activated in a single zone with one button. If more than 4 zones are required in your installation, then you will require more than one master transmitter. For example, two master handsets can control up to 8 zones. A Handset Transmitter is the "MASTER CONTROL" in the remote system. Transmitters are sold separately, each with random codes assigned for each button or zone. A Remote Control Keypad Transmitter (903000032) is also available for addition heater control.
*It is recommended to have a back-up transmitter in case the original is lost or misplaced. If a master transmitter is lost, any back-up transmitter can have the random codes changed for each button and then heater receivers can be re-programmed.