The UNIVERSAL RotoBolt lock can be mounted in all four mounting directions. Further, by flipping the lock, both blocking directions can be realized. The mounting dimensions are standard near the lock bolt and a 3rd hole is necessary for the 3rd mounting screw. The lock is delivered with US 1/4 – 20 screws. The Electronic’s feature a 6-digit Manager (service) code that can be changed by the user. With the manager (service) code a secondary user code will be activated automatically once the service code has been changed. If a valid code has been entered, the electronics will remove the blocking mechanism within the lock for 3 seconds and the boltwork can be moved to the OPEN position and subsequently retracting the bolt inside the lock case. When moving the boltwork into LOCKED position the RotoBolt automatically secures. LpLOCKS recommends FRESH Duracell™ or Energizer™ ALKALINE batteries.