Simplex 4904-9178 Visible Notification Appliance Wall-Mount SF 22/01 The wiegand output can send

The wiegand output can send 3 different event data

Additional Replacement Duct Detector Boards (565-925) sold separately

without overloading the main panel

Detector Tester Calibration Kit

They fit into a standard 4‐inch square or double‐gang electrical back box

Simplex 4904-9178 Visible Notification Appliance Wall-Mount SF 22/01 The wiegand output can sendSimplex 4904 Series wall mount visible notification appliances provide symmetrical light output in key axis directions by utilizing a compound, multi surface reflector. The lens assembly fits securely into its housing, providing a high integrity notification appliance that is impact and vandal resistant and suitable for a variety of applications.