772ANZ. The Safety Beam Protector System reliably stops the garage door from closing when the beam is obstructed or broken. This safety feature can prevent injury or damage to your vehicle, person or pet. The Safety Beam Protector System reliably stops the gate from closing when the beam is obstructed or broken. This safety feature can prevent injury or damage to your vehicle, person or pet.   Brackets and wires not included.   Compatible with all Merlin Gate Openers sold in Australia and New Zealand.