Meets all requirements of latest EN54
Two-wire, polarity-free realizes convenient wiring
Completes EMC test, it has strong anti-electromagnetic interference ability, high stability and reliability
Ultra-low consumption and strong loading capacity
Loud sound output over 75 dB(A) at 3 meters, accompanied with bright alarm signal
Non-loosening screws on base terminal for easy installation
Contacts material is highly acid-resistant and rust-resistant
