The alarm systems in the ASU series independently monitor the house temperature. Separate temperature sensors ensure constant house climate registration and the system activates the alarm if any set limits are exceeded. The alarm system also features contact inputs to monitor external functions and factors such as the climate control system or door contacts. The easy-to-understand panel lay-out of the ASU series shows you at a glance which alarm zone has been triggered and whether it is a temperature alarm or an external alarm. The integrated temperature compensation prevents any unnecessary alerts in the event of high outside temperatures. The Stienen alarm systems are powered by their own batteries that feature an intelligent drip charging system with temperature compensation. This is monitored permanently. All these features allow the ASU series to guarantee maximum reliability at your farm at all times.