FORUM

As it's only 2v more than the recommended maximum voltage for a 26C2T, it probably wouldn't cause any problems - they are very robust units and should be able to cope with it, with perhaps a small reduction in service life.

I'm not sure if inserting a series resistor would affect operation of the circuit - maybe someone could enlighten us?

If you know the resistance (or current) of the unit then it's easy to calculate the resistor (and wattage) of the resistor using Ohms Law (V=IR). Adding this would not cause any operational issues except the heat the resistor would generate. But like Potless, I very much doubt that a 2V excess would cause any problems without the additional resistor. The give-away would be if unit got hot.

Yes, my relay runs very cool in operation, so any overheating should be immediately noticeable.