A simple, low cost, versatile timer suitable for security systems and many other applications where a reliable modular timer is required. In all cases, the timer will start when an input signal is applied. This signal may have a positive +5V-±15V or a negative (0V) voltage. The input may be a pulse or a continuous signal. Two modes of operation are possible MODE A - the relay is ON AFTER the time period where the relay can be latched On or activates momentarily and latches if there is an iput signal- MODE B - the relay is ON FOR the time period and then switch off even if there is an input signal present and reset once the signal is removed. A 0-60 second or 0-60 minute delay on or delay off timer. This timer is polarised and is therefore suitable for alarm bell circuits. It must be wired the correct way round for it to operate. Supply Voltage: 6 – 28V DC. Auto regulator – no links to set or cut. Thermal overload protected. Nominal Current: 70mA Output: Single Pole Change Over