The LET4 radio controller is the most intelligent and secure solution for an optimal energy use. The advantages at a glance:

Communication: internal – between several radio controllers via wireless or Bus (RS485);
external – LAN interface for smartphone or PC use.

Energy efficiency: pre-configured, individually customisable time programs.

Emergency operation: in case of loss of radio signal between the radio controller and the wireless room operating unit.

Anti-blocking function: for pumps and underfloor heating manifolds.