Description
The Markel Products Co. ET9SRTS is a heavy-duty line voltage thermostat engineered for dependable temperature control in electric heating applications. Rated for use on closed-loop (CL) circuits only, this thermostat delivers broad voltage compatibility and a generous amperage rating, making it a go-to solution for commercial and residential electric baseboard, fan-forced, and radiant heating systems.
Key Features
- Wide voltage compatibility: 120–277VAC for flexible installation across single-phase systems
- Temperature control range: 50–90°F for precise comfort management
- 22A amperage rating supports high-load electric heating circuits
- Designed for Closed-Loop (CL) circuits only — ensures safe, code-compliant installation
- Robust construction from Markel Products Co., a trusted name in electric heating controls
Specifications
- SKU: ET9SRTS
- Brand: Markel Products Co.
- Voltage: 120–277VAC
- Temperature Range: 50–90°F
- Amperage: 22A
- Circuit Type: CL (Closed-Loop) Only
Applications
- Electric baseboard heating systems
- Fan-forced electric heaters
- Radiant electric heating panels
- Commercial and residential line voltage heating control







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