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The Horstmann 425 Tiara is a programmable electro-mechanical 2 channel programmer designed for central heating radiators. This wall-mounted controller operates on a corded electric power source with a voltage of 230V. The white analogue/mechanical control style allows for easy programming and features a timer function for added convenience. The Horstmann 425 Coronet model is known for its reliable performance and compatibility with various heating systems, making it a practical choice for efficient climate control in your home. Fast shipping is available with a delivery time of just 48 hours.