Thermostat HADEX STC-3008

Digital dual thermostat - STC-3008 range -55 ° C ~ 120 ° C, 230V AC. The thermostat allows setting the temperatures T1 and T2 for two independent circuits, ie. 2 × T1 and T2, where T1 is the temperature at which the thermostat switches on and T2 is the temperature at which the thermostat switches off. The thermostat is closed by the OUT1 and OUT2 LEDs.


Product parameters:

- dual thermostat with two external temperature probes and output relays
- two independent temperature controllers in one device
- allows to regulate the temperature in the range of -55 ° C ~ 120 ° C with a resolution of 0.1 ° C
- dual display


Technical parameters:

- power supply: 230VAC
- power consumption: 3W
- adjustable temperature: –55 ° C ~ 120 ° C
- up to 99.9 ° C with a resolution of 0.1 ° C, 100–120 ° C with a resolution of 1 ° C
- temperature measurement accuracy: ± 1%
- temperature sensors: resistance NTC, 10kohm, 0.5%, leads 1m, waterproof
- relay switching contacts: 230VAC 10A (resistive load)
- working temperature: 0 ~ 60 ° C
- dimensions: 75 × 34.5 × 85mm
- mounting hole: 71 × 29mm
- weight: 138g


Instructions for use:

To set the temperature T1, hold down ^ 1 or ^ 2 for a long time, depending on the setting of the required circuit 1 or 2. As soon as the display starts flashing, you can use the arrows to adjust the switching temperature setting (default 25 ° C). Hold down ˇ1 orˇ2 to set the temperature T2. As soon as the display starts flashing, the arrows can be used to adjust the switch-off temperature setting (preset 40 ° C).
By simultaneously pressing ^ 1 and ^ 2 in the setting mode, you can further adjust the delay time of circuit 1 (P0 on the display) or circuit 2 (P1 on the display) in the interval 0–60min (default 0min) and the audible high temperature alarm (P2) or low temperature (P3). The high and low temperature audible alarm is factory set to the thermostat limits, ie. –55 ° C / + 120 ° C. Simultaneously pressing ^ 1 and ^ 2 for 3sec. the factory parameters are restored.
Connect the supply voltage to the red (+) and black (-) wires, the 12V appliances to the yellow and black wires.

Operating modes:
- both circuits can also be set inversely, when T1> T2. This makes it possible to obtain many control methods by combining the two circuits, eg to switch on the heating in a certain temperature range and to switch on cooling in a different temperature range.
- heating mode (T1 - cooling mode (T1> T2): After switching on the device, the output is inactive until the measured temperature reaches the level T1. Then the output is activated until the measured temperature reaches level T2.

The product is not a self-functional unit, it requires professional assembly.