[zipedit] DIFFERENTIAL THERMOSTAT SOLAR WATER HEATING PUMP CONTROLLER 12V 10A LONG SENSORS Ideal for home solar water heating system! Item Description Technical data: 1. Voltage - 12 v DC 2. Temperature range: from 1 0C to 90 oC 3. Differential range form - 0.3 to 50C - set with trimmer. 4. Relay Output : 10?/125V DC 10A/250V AC 10A/12V DC 5. Sensors - NTC 10K not waterproof. Plate dimensions - 45x25 mm. Length of wires on probes - 25 cm, can be extended up to 10 m. Led indication for working load. Method of work - Whenever the Probe 2 is measured to be hotter than the Probe 1 , the output NO contact of the relay close and led come on. The output remains on until the measured temperature difference between the two sensors has fallen depending of the set differential by the trimmer. Setting differential temperature: The trimmer need to be at average position initially. Rotate it at left and right precisely until led go off. In this way thermostat is set at the lowest differential temperature and is ready for work. When you rotate it counterclockwise - increase differential temperature. Please note that trimmer is not so precise and small rotating make big change of the temperature between two sensors. For example - Probe 1 can be located at the output pipe of hot water boiler and Probe 2 - to Output pipe of the solar panel. The output NO contact can be used to drive 12V or 220V up to 10A water pump. In this way - when solar panel is hotter than boiler - the pump will come on. When Differential temperature of the two probe come equal to the set by trimmer - the relay will be deactivated. Package content: Thermostat Wiring diagram Shipping information All items will be checked before packing. All items are new and of high quality. Item will be shipped within 1 business days upon receipt of payment, excluding weekends and public holidays. We ship worldwide. Item will be shipped to winning Buyers from Bulgarian Post. Delivery time is approx. 5-20 business days to most destinations: 5-10 business days to UK 5-10 business days to Germany 10-25 business days to USA/ Canada 10-15 business days to Australia 5-14 business days to Europe Payment Information We accept PayPal . It is easy and safe. PayPal allows you to pay by credit cards, debit cards, bank transfers and PayPal account balances. eCheck will be held until cleared. If you do not have PayPal account, please sign up and learn more about PayPal . Item will be shipped to Paypal shipping address only except special notes from buyers. Payment is due within 7 days of the close of an sale. Therefore, please be sure that buyer will be able to clear payment through PayPal, before bidding or buying.We are not responsible for any custom duty or tax since our price do not include this charge. Returns Information 30-day Warranty with Exchange for defective, malfunctioned, incorrect or parts-missing items. Please notify us and simply return the item with all parts and accessories packed and marked.