DAHUA Emergency Break Glass Button ASF921 has a Photoelectric control technology to prevent the mechanical failure, Ultra-low temperature design, not only is it more safe, it’s also more durable. It has 500,000 electricity aging test, Built-in reverse current protection circuit in case of high current and it also comes with an in-buit microprocessor chip control circuit.

DAHUA Z&L Bracket For Magnetic Lock ASF280ZL, made from Aluminum Material, used perfectly for ASF280A, ASF280B, 0.58 kg (total). Dimensions: 250  x 48  x 28 mm – L-bracket, 180  x 100  x 50 mm – Z-bracket.