Spheros timer, auxiliary heater (11122580A)

On a cold winter morning, a bus driver steps into the vehicle, starts the engine, and activates the Spheros digital timer switch on the dashboard. Within minutes, the auxiliary heater warms the cabin and defrosts the windshield, all without idling the engine. This timer is specifically engineered for Spheros Thermo E, S, and Top series heaters, offering precise control over preheating and ventilation cycles.

Key specifications

• Compatible with 12V and 24V DC electrical systems
• 7-day programmable with up to 3 preset start times per day
• Integrated real-time clock with memory function for power loss protection
• LCD display with backlight for clear visibility in low light
• Flush mount design for seamless dashboard integration
• Operating temperature range: -40°C to +85°C
• High-impact ABS plastic housing in black
• IP40 protection rating
• Multi-pin connector (6-pin) for reliable wiring
• Intuitive push-button interface with diagnostic function

Why choose it

This timer enhances comfort and reduces engine wear by allowing scheduled preheating. Its robust construction withstands extreme temperatures, and the memory function ensures settings are retained even after battery disconnection. The backlit LCD and simple controls make it easy to operate for drivers of all experience levels.

Ideal use cases

• Buses and coaches with Spheros auxiliary heaters
• Commercial vehicles requiring scheduled cabin preheating
• Off-highway equipment operating in cold climates
• Retrofitting existing heater systems with digital control

Good to know

Installation requires a compatible wiring harness and a dashboard cutout. The timer supports multiple languages, including English and German, for user convenience. Always refer to the heater's manual for proper configuration and safety guidelines.