Room and floor thermostats: wall, DIN and plug-in

Buying advice 19/10/2026 By INVENTĀRS 5 views 0 reviews

Heating control starts with what you measure and what you switch, not with Wi-Fi. This page has four products the shop often labels “thermostat”. Generic timers stay in timers. Large loads through a contactor: contactors.

LBN 261-15 does not specify a thermostat model. P.28¹ is about residual-current protection on sockets and lighting, not Sedna vs Merten. No wiring diagrams, no live work.

Job	What fits here	What it is not
Water or cable floor, flush wall	Floor / universal wall thermostat in a frame	A 0…60 °C DIN cabinet thermostat; a Wi-Fi plug
Room radiator / convector, flush	Room thermostat in the series frame	A floor probe “because it says 16 A”
24 h / 7 d programme on the rail	Acti9 THP1+ programmable controller	A Céliane frame thermostat
Enclosure heater against condensation	DIN 17.5 mm, 1NC, 0…+60 °C	A living-room floor loop
Portable heater in a socket	Wi-Fi plug-in	Fixed wall installation

Schneider Sedna SDD111507 — floor thermostat on the card, 16 A, 71×71×47 mm, screw terminals, flush box. Schneider Merten MTN5775-0000 — floor and room, touch display, 16 A resistive / 1 A inductive, 71×71×26 mm, IP20. 16 A vs 1 A matters: a pump or a coil is not “the same 16 A floor”.

BTicino N4441 LivingLight — 2 modules, 230 V AC, 44×44×47 mm. BTicino KM4441 Living Now — IP20, 45×86×50 mm. Legrand Céliane 067989 graphite; amperes are not on this card — datasheet only, we do not invent 16 A.

Schneider THP1+ CCT15834 — Acti9, 1C, 24 h / 7 d, a rail controller not a Sedna frame. Finder 7T.81 — 17.5 mm, heating control, 1NC, 0…+60 °C: an enclosure / equipment thermostat, not a living-room floor. THORGEON 18007 Wi-Fi plug-in goes in a socket. LBN 28¹ (1): ordinary sockets ≤32 A for uninstructed persons need ≤30 mA — residual current protection.

Check what is measured, output current and load type, frame series, IP20 ≠ outdoor, and whether a contactor is needed. Thermostats. A timer is not a thermostat: timers.

Sources: LBN 261-15 p.28¹, 55 (18.10.2026); 16 A / 1 A, IP20, sizes, 0…60 °C from the cited cards (19.10.2026).