General description The 4PCS Radiator Thermostatic Head is designed for efficient temperature control in home and office heating systems. Made from high-quality plastic and alloy, these thermostat heads are durable and resistant to deformation. They feature a built-in frost protection mechanism, making them suitable for use in cold environments. Technical specifications Thread size: M30 x 1.5 Modulation levels: 5 Upper limit of zeroing ratio: 0, *, 1-5 Compatibility and accessories Compatible with M30 x 1.5 threaded connections of various radiator manufacturers Installation Easy to install by screwing the thermostat head onto the valve until the arrow points to 0 to close the valve Usage Controls internal temperature based on heating and room temperature Suitable for water, non-corrosive liquids, and non-flammable gases Other information High-definition internal structure design with a control knob marked with a scale for precise temperature control Frost protection feature prevents