Save yourself some hassle with this pre-assembled timing controller, all packaged into a small yet reliable form factor. It's simple to connect and versatile enough to configure to your needs. Periods of 2 seconds to 23 minutes can be adjusted easily with a screwdriver. The start and stop functions are controlled by simple switch inputs (two required, sold separately) and the relay output can control a device of up to 25VDC at 3A. Update specifications to: Technical data: Input voltage solar cell panels: 14 - 30 V/DC open circuit voltage Nominal voltage: 12 V/DC Max. input current: 10 A, Short-time till 5 min: 20 A Inrush voltage: battery voltage approx. 13.4 V Interrupting voltage: battery voltage approx. 14.4 V Displays: 1 LED for "CHARGING", 1 LED for "BATTERY FULL" Own power consumption: 2.5 mA (LED switched on) Current consumption: 20mA/80mA (Relay Off/On) Time adjustment: 2 sec to 23 min