Digital Differential Thermostat for your solar project. I use one of these to trip the pump on my solar hot water collectors, but they have many uses. Building a solar hot water system? Want to recover the heat from you attic in the winter? This will work perfectly to turn your pumps or fans on and off.
Features:
- SPDT relay output. This means you have "normally open" and "normally closed" outputs on the board. Useful if you want to turn things OFF at a certain differential temperatures and not just turn things on.
- Output relay is rated for 250VAC and 5A. However, if you are controlling line voltages I recommend you use a solid state relay (included with this auction) or an AC "contactor". Those types of devices are designed for line voltages and have been tested for same.
- NOTE: I do not recommend you use the thermostat for line voltages without using the SSR included in this auction, and if you do you assume all risks yourself.
- LCD display of current sensor temperatures, current differential, and differential set point.
- Freeze protection, will not trip relay if either of the sensors are disconnected, or either read below freezing. This can be disabled.
- User select-able Celsius/Fahrenheit readout.
- Will run from just about any "wall wart" type power supply.
- NOTE: This device does not *output* any power, think of it as a switch that turns on and off. You will need to supply the power for your pump/fan.
- Digital Differential adjustable from 1C to 40C I rate the output section of this circuit board for 24V, AC or DC, and it can handle 5 amps. I include two temperature sensors with this item. They are linear active temperature sensors that have been cased and potted, with short pieces of wire attached so you can extend them for your project.
Specifications:
- input power: 9V - 12V AC or DC from wall wart (do not exceed 26VAC input)
- sensors used: MCP9700 linear active thermistors
What is included: Digital thermostat, two sensors, 12V 1A power supply, 25A solid state relay
Visit my ebay store for more solar and electronics items. http://stores.ebay.com/Richardsfoundry
Please be advised that I combine shipping. However, in order for Ebay to calculate this correctly you have to use their "add to shopping cart" button instead of multiple "buy it now" buttons. If you accidentally hit the "buy it now" buttons I will refund the incorrect shipping, or you can request a corrected invoice.