W4 Mains tester - 20018

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Best current price£8.95from eBay
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eBay£8.95Visit shop Mains Socket Tester 250AV 13A W4 Motorhome Boat Caravan Home Quick Tester
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The W4 Mains Tester (MPN 20018) is an essential tool for caravan and motorhome owners who frequently connect to site mains points. It provides a simple and immediate way to verify the electrical wiring is correct before connecting your vehicle, preventing potential damage to appliances. While easy to use, it is specifically designed for UK 3-pin sockets, limiting its application in other regions.
| Model Part Number | 20018 |
|---|---|
| Brand | W4 |
Refer to the indicator guide on the tester or in its manual. Typically, a specific combination of lit LEDs signifies correct polarity and absence of faults.
No, the W4 Mains Tester is designed exclusively for UK 3-pin sockets and will not fit or function correctly with European or other international outlets.
Connecting your vehicle to a faulty supply can cause damage to your caravan's or motorhome's internal electrical system, appliances, and electronics.
The W4 Mains Tester primarily indicates wiring faults (like polarity issues, earth connection, etc.) rather than providing precise voltage readings.
The tester is designed for regular use at campsites. Handle with care, avoid dropping, and keep dry for optimal longevity.
You can purchase replacements from authorized W4 retailers or online stores that stock W4 electrical accessories.
Ensure the mains socket is receiving power. Try another known-working socket. Check that the tester is fully inserted into the socket.
Do not connect your vehicle. Report the issue to the campsite management. The fault lies with the campsite's electrical supply, not the tester.
Do not use a damaged tester. Contact the retailer or manufacturer for a replacement.
Setup: The W4 Mains Tester requires no setup. It is a plug-and-play device.
Compatibility: This tester is designed exclusively for use with standard UK 3-pin mains sockets. It is not compatible with European sockets, US outlets, or other international plug types.
Care: