Programmer Honeywell

Single-channel 24-hour service timer for scheduling and control, with simple one-day programming.

Honeywell ST9400C is a 7-day, 2-channel programmer for heating and hot water systems. It allows you to schedule up to three on/off events per day, providing precise control over your home's energy consumption.

Well suited to control combination boiler installations or additional zones in an s plan plus system - Optimum stop, start & delayed start features that learn how the room is heated - On screen text display and function buttons to ensure simplified progra

The Honeywell ST9400S is a compact, 2‑channel service programmer with an intuitive LCD interface, designed for quick diagnostics and programming in automotive electronics. It offers reliable, one‑day use for efficient vehicle systems management.