Eaton BiWire Ultra Multimode 5 in 1 Detector offers a multi-mode, 5 in 1 detector, approved to both EN54 parts 5 & 7, which covers many building needs. It’s quick and simple to install with a stylish low profile design. The detector is mounted on our standard conventional base (FXN520). This 5 in 1 detector can be configured to operate as either an optical detector, photo-thermal detector or 1 of 3 heat detector modes (rate of rise and 2 fixed heat models) using the four position switches located at the back of the detector. The EFBW5IN1DET is certified for use in all 5 modes.