Grenda-hammer Electronic room thermostat

The CRTN electronic room thermostat from Grenda-Hammer offers precise temperature control in the range from 5 to 30 °C and is suitable for surface mounting or installation on a flush-mounted box. Its fully electronic interior enables 2-point or PWM control, and the integrated 10A relay allows direct connection of electric heaters up to 2.3 kW. Special attention is paid to the valve protection function, which prevents the heating valves from sticking by becoming active during inactive phases, such as the summer period.