37 Tex. Admin. Code § 259.760
Power operated locks shall be motor, solenoid, or pneumatic type and provide electrical control unlocking, key unlocking by manual operation, and automatic mechanical deadlocking of doors upon closing. A door position switch and door position indicator shall be provided for all doors equipped with power operated locks. Heavy-duty, detention type door closers should be provided on all swinging doors equipped with power operated locks.
Source Note:The provisions of this §259.760 adopted to be effective September 2, 1997, 22 TexReg 8405.