Features

• LED/Buzzer Combination with Touch Acknowledgement Function - 450 Series. Unique acknowledgement function: by gently pressing the front face the audible signal can be turned off leaving the optical signal on to highlight the malfunction LED Permanent light with additional continuous tone Silence the audible signal by lightly pressing the frontal area Life duration up to 50,000 hrs Potential-free output for transmission of the acknowledgement signal to the control unit Positive and negative logic possible 3 kHz tone frequency Installation mounting for Ø 22.5 mm (Mzz x 1.5 mm) with anti-twist device