The 8836M-0 speaker microphone unit (0 button)is an update of the 800 series equivalents. They have improved weather sealing and electronics so as to withstand harsh environments. These modules will fit in the 800 and 8000 series housings . Requires suitable call button module. Suitable psu is the 321 or 322
Number of buttons - 0 Lock output - Dry contact (C, NO) Power - 12Vac
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