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 Single Door U Bracket ASF280U

for 280kg Magnetic Lock made from High Strength Aluminum Alloy
Its door is of glass, open Way 90°/180°.