The ES1247B is a single channel electronic time switch with volt-free output contacts, making it suitable for both line voltage and low voltage control circuits. It offers configurable 7-day, 5/2-day, or 24-hour operation for independent channels within a single unit. This programmer is ideal for combi-boilers, systems with a common heating and hot water zone, and controlling additional heating zones. It features a wall plate that matches the industry standard pattern used by many other time control manufacturers, allowing for direct replacement with minimal re-wiring. The new range of programmers comes with a 3-year guarantee for consumer and installer peace of mind, emphasizing value, quality, and simplicity for an economical and durable home solution. It also boasts a large, easy-to-read LCD display with blue backlighting and user-friendly operation. Weight: 0.5070632026 Pounds.