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Holiday Closure: slight delays to shipping:-

PLEASE NOTE- Solarproject Holidays -- Delivery Delays ! The SolarProject shop is closing briefly for holidays. Any Orders placed AFTER Thursday 6th August will be delayed dispatching until Tuesday,11th August 2020 as we are away travelling. We will still be available on email most days but it may take a little longer than usual to get back to you. Thank you for your understanding - Peter - email: -


Basic Temp Diff Controller 12V SP100

Basic Temp Diff Controller 12V   SP100
12V Temperature Difference Controller Circuit £52.95

12Volt Programmable controller to switch solar pump in when heat is available in collector.

Huge improvement in solar panel efficiency, ensuring maximum capture of heat while eliminating cooling risk when collector temperature falls below tank temp.

Includes options e.g.Anti frost protection to pulse pump at times of frost risk, or dual panel control. (can be programmed to your needs pre-purchase)

LEDS to indicate power and pumping.

Additional relay available to control over-heat risk.

Includes 2 temperature-probe leads, with 5 metres and 2 metres of cable (for collector and tank)

Additional probes available.

Enables download of temperature logging into a PC with serial cable (at additional cost). See screen print below

Requires 8-20V DC supply (available separately)

Product ref SP100


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