Revotec's innovative engineering team has developed this simple unit using this latest technology, components and assembly methods to products a robust reliable unit that will not obstruct water flow. Made in the UK, Each unit is Non-Leaking, Incredibly easy to install, operate and overcomes all the problems associated with any capillary action and clip on devices. Each system is supplied with a replay and all necessary fittings. Suitable for use with all Electronic Radiator Cooling Fans and is available in a range of fitting to suit most applications. Positive Earth EFC M14 x 1.5mm External Thread Part Number: EFC-M14-PE Positive Earth Housing. Screws directly into radiator with thread x 1.5mm boss. Technical Information: Supply Voltage: 12v Body Length Approx: 32mm Thread Length Approx: 12mm Material: Aluminium Relay Rating: 30 AMPS Wire Lengths: 700mm Supplied With: Relay, Cap, 3 x Cable Ties, Fitting Instructions