ManHua MT822 Astronomical Timer Switch | 2 Relay, 240V 16A | Automate Lighting, Irrigation, Signage, Digital LCD, 7-Day Programmable

Tracks actual sunrise and sunset for your location rather than a fixed clock time, so outdoor lighting switches on right at dusk and off at dawn without needing reprogramming as the days lengthen or shorten through the year. That astronomical calculation is the entire point of this timer over a standard daily/weekly model, it adjusts itself continuously rather than needing a manual seasonal update.

Two independent relay outputs run two separate circuits from one unit, useful for staggering a compound's perimeter lights on one relay and a sign or driveway light on another, each with its own schedule if needed.

Specifications

• 240V AC, single phase, 16A rated load
• Astronomical, daily and weekly programming
• Up to 22 programs, 2 relay outputs
• 7-day digital LCD, DIN rail mounted, battery backup

For security lighting that deliberately varies rather than tracks a predictable astronomical pattern, making it harder for someone watching a property to predict, the ManHua NKG-3 elsewhere in this range takes the opposite approach on purpose.