RDH100 Battery powered digital room thermostat features large LCD screen, temperature setting knob, TPI control for use with an ON/OFF heating system and a relay with volt free contacts. The digital display shows the actual room temperature and the temperature setpoint. When visible, the triangle symbol indicates a heating demand and the battery symbol indicates that the batteries need replacing.
| Brand | Siemens |
| Dimensions | H 120 x W 90 x D 32mm |
| Power Supply | 2 x AA 1.5V Alkaline Batteries |
| Switching Voltage | 24 - 250 V AC |
| Temperature Range | 5 to 30° C |
| Type | Room Thermostat |
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