The manual fire alarm switch OP1 is designed for use in industrial and public spaces. It is available in two versions: flush-mounted and surface-mounted. Each version is offered in two types: A and B. In the event of an emergency, type A only requires breaking the glass, which releases the button. In type B, after breaking the glass, the button must be pressed with automatic reset. Each housing can accommodate three SP22-10 switches (normally closed) or SP22-01 switches (normally open). Additionally, each model can be equipped with an LED that can be connected either to the switch or directly to the facility's alarm system. Activation and signal transmission occur with the breaking of the glass (type A) or with the breaking of the glass and the pressing of the button with automatic reset (type B). The reset of the alarm status is done by replacing the fragile element (glass - order code PPOŻ-5701). The product meets the standard PN-EN 54-11. Certificate of approval No. 0654/2009. EU compliance certificate No. 1438/CPD/0130.