I have a Chargemaster Homecharge 30 amp unit which has performed perfectly for 6+ years. The only mod I have made is to run the type 1 socket through an adaptor to the type 2 on my new Leaf e+. The unit has tripped onto a red signal. To reset it requires a key, which I have mislaid. I have the reference number of the key. Chargemaster tell me that if I had a more recent unit which has a 3 digit key reference on the lock they could supply a replacement, but for this unit the factory "no longer has keys in stock". They can supply a second had swap unit for the princely sum of £539. I'd really rather pay a tenner for a new key. I've asked them to work a little harder on the problem, but any wisdom from all the brains on Speak EV would be very welcome.