Danfoss RA/VL thermostatic radiator sensor, OEM order code 013G2952 — a remote (off-valve) thermostatic operator: the gas-charged sensing bulb sits in the room air and is linked to the valve head by a 2 m capillary tube, so the room temperature is sensed away from the radiator (used where the valve is boxed in, behind a curtain or close to the floor). It clamps onto Danfoss RAVL radiator valves via the RAVL connection (clamp ring fixing) and requires no wiring or batteries. Temperature setting range 5 °C to 26 °C; sensing charge gas; housing colour White RAL 9016. The head provides built-in frost protection (holds a minimum ~8 °C when turned to the snowflake position), adjustable maximum/minimum temperature limitation and set-point locking with hidden pins under the dial. Supplied as a service set — sensor, gland seal — to refurbish an installed RAVL valve; Frost protection, limiting and locking of temperature set-point, suitable for older Danfoss RA/VL 26 mm valves. Genuine Danfoss part; technical data quoted verbatim from store.danfoss.com (code 013G2952). OEM P/N 013G2952, EAN 5702420048062. HS 9032.10 (thermostats). Modulates refrigerant flow to the evaporator in response to superheat at the evaporator outlet.