Green Shield’s battery powered electronic door locks and keyless entry system provide controlled access for basic and multi-level high security requirements. Priced to compete with entry-level brands, GSS standalone locks are loaded with features professionals expect with hardwired systems. set can retrofit existing cylindrical mortise or exit bar door lock prep. The upgraded set can retrofit manual cam lock prep and uses standard AAA batteries. Keypad programmable to quickly add or delete individual marijuana business users.