Trine Electric Door Openers. Designed for remote control of door locks for apartment buildings, businesses, public buildings, and anywhere security is required. Operate on 8 to 16 volts AC or 3 to 6 volts DC. Other voltages special order. US 4 Finish. Model 001: For mortise bolt locks with latch bolt only. Reversible for LH or RH doors. Face: 5-7/8" x 1-1/4" x 1-9/16" deep.