Wireless heat detector. Can detect the fixed threshold of 58°C in addition to rapid changes in temperature (“rate of rise”) as set out by standard EN 54-5 for class A1R. The control algorithms implemented also mean it can be used in environments which are subject to ambient temperature changes; it is particularly useful for dusty or dirty environments or where the humidity level is high, factors which may negatively impact the performance of the optical sensors. Two-way radio communication. Immediate transmission in the event of an alarm, fault or removal. Monitored dual battery for backup. Two-tone LED with 360° visibility. Option of conducting the test with a magnet. IP40 rating. Approved to EN 54-5 and EN 54-25. Base included.