➤ High safety factor, with strict quality control and quality assurance, can be used with peace of mind 24V Thermostat Grw8 Temperature Control Relay Din 24V 240V Temperature Controller GEYA GRW8-01 Din Rail Temperature Control Relay AC/DC 24V-240V - OEM Heating Cooling Controller The temperature adjustment range is -15℃ to 45℃ and the temperature setting hysteresis value is 0.5℃ to 5℃ · ➤ Rated impact resistance voltage is 2.5kV, use... ➤ Rated impulse withstand voltage is 2., 5kV, using 35mm rail installation is easy to use GEYA GRW8-02 Temperature Range Control Relay 16 Amp AC - NovusDash ➤ The temperature adjustment range is -15°C to +45°C, and the temperature adjustment hysteresis value is 0., 5°C to 5°C