Danfoss ESM-10 room temperature sensor, Pt1000, −30…+50 °C, IP54
- Type: Pt1000 (class B per EN 60751)
- Measuring range: −30…+50 °C
- Ingress protection: IP54
- Mounting: wall mount (indoor)
Where ESM-10 is used
ESM-10 measures the reference room temperature — typically installed in a living room, lounge, or office workspace. The signal is fed to a Danfoss ECL Comfort controller, which adjusts supply water temperature based on room temperature (when the application key enables room-sensor mode). Used where weather compensation alone is insufficient — e.g. buildings with significant solar gain, high thermal inertia, or uneven heating demand.
Technical specifications
| Parameter | Value |
|---|---|
| Code | 087B1164 |
| Model | ESM-10 |
| Type | Pt1000 (class B per EN 60751) |
| Application | Room air temperature |
| Measuring range | −30…+50 °C |
| Accuracy (class B) | ±(0.3 + 0.005 × \|t\|) °C |
| Output signal | 1000 Ω at 0 °C (Pt1000 characteristic) |
| Time constant (τ) | 8 min |
| Connection | 2-wire cable (terminal block) |
| Ingress protection | IP54 |
| Housing material | ABS plastic |
| Mounting | Wall (screws) |
| Weight | ~23 g |
When to choose ESM-10
- You want heating mode with room-temperature feedback (not just weather compensation)
- Building has significant solar gain or uneven daily heat demand
- Reference room sensor required for ECL Comfort 210/310
- Compatibility: Danfoss ECL Comfort 110 / 210 / 296 / 310 (all application keys); any other controller accepting Pt1000 signal (Siemens, Belimo, universal BMS modules)
B2B delivery and logistics via Amegata.lt
- 24-hour delivery across Lithuania (from our warehouse in Vilnius)
- Competitive B2B pricing — often below market average
- 30-day payment terms for companies (per contract)
- Free technical consultation for sensor placement
Official Danfoss catalogue: store.danfoss.com/087B1164
Frequently asked questions
How does ESM-10 differ from ESMT?
ESM-10 is for indoor use (−30…+50 °C range, 8-min time constant), while ESMT is for outdoor temperature (−50…+50 °C, 15-min inertia). Both are Pt1000, but their physical build and thermal inertia differ — they cannot be swapped without accuracy loss.
Where to mount a room sensor?
On an internal wall, 1.5 m above the floor, away from windows (≥1 m), radiators, ventilation grilles, direct sunlight, and heat-radiating devices (TV, computer). Ideally in a room that best represents the average building/apartment microclimate (e.g. the living room).
How to connect it to an ECL Comfort controller?
ECL Comfort 210/310 has dedicated room-sensor inputs (see the application key manual — typically S2 or S3 terminals). Wiring — 2-wire, cable up to 50 m using 2 × 0.75 mm² or 2 × 1.5 mm².
Can it be used as a pipe temperature sensor?
No. ESM-10 senses air (room) temperature — its 8-min time constant is far too slow for water pipe monitoring. For pipes use ESM-11 (surface-mounted) or ESMU (immersion).
