ABSOPULSE BPM 300-F0 is a compact battery presence monitor designed to indicate whether the backup battery is connected to the system in industrial applications. Without this unit, it is difficult to detect battery presence in real time. Unit is designed for systems with 3A max battery current, as it monitors whether the low impedance of the battery is connected to the battery input terminal. If the battery is removed or the battery fuse is blown, it provides an instant alarm via a Form B relay contact. Product is connected between the battery and the battery terminal of the system. It is self-powered and does not require any further connections (2 terminals in, 2 terminals out).