RM1. The RM1 enables Alpro electric door strikes to operate with AC systems and at a reduced current consumption over dedicated AC electric strikes. Please note : Only for use with a product with maximum current load of 1 amp - not solenoid bolts or shearlocks.. Only for use with product with maximum current load of 1 amp. Enables electric strikes to operate with AC systems. Input voltage range is 12-24V AC +/-15%. Maximum current load is 1 amp (1000 mA)