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SK80-BFTLFT-AFF-WMT - KNX Soil Moisture System with Watermark Sensor and Air T/H Sensor
✗
UL Listed
This product has not been certified by an NRTL (UL, ETL, CSA or
equivalent). Installation in USA projects may require a Field Evaluation
by a recognized laboratory. Consult your local AHJ before specifying.
~
Low Voltage · SELV
This device operates on a Safety Extra Low Voltage circuit — such as
the KNX 29V bus or a DALI 16V bus (NEC Class 2). When powered by an
NRTL-listed power supply, many AHJs accept non-listed SELV devices.
Verify with your local AHJ before specifying.
Regular price
$493.10 USD
Regular price
-31%
$710.07 USD
Sale price
$493.10 USD
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The SK80-BFTLFT-AFF-WMT combines soil and climate measurement in one KNX device. A Watermark sensor on a 5 m (16.4 ft) cable reports soil moisture and soil temperature, while an integrated sensor adds air humidity and air temperature, a good fit for gardens, greenhouses and sports turf irrigation.
The surface-mount outdoor housing is rated IP54/65 and has an integrated display, two potential-free switch inputs and one switch output. It runs on KNX bus power. Not suitable for potted plants.
Key Features
- Soil water tension 0 to approx. 220 kPa (31.9 psi); soil temperature -25 to +50 °C (-13 to 122 °F) (PT1000, DIN class B)
- Air humidity 0 to 100 %, ±3 % (20 to 80 % at 20 °C (68 °F)); air temperature -25 to +80 °C (-13 to 176 °F), ±0.4 °C (±0.72 °F) (5 to 60 °C (41 to 140 °F))
- Watermark sensor with 5 m (16.4 ft) cable included; cable extendable up to 50 m (164 ft)
- 2 potential-free switch inputs (S1, S2) and 1 potential-free switch output (S3, 48 VDC / 90 mA)
- Integrated display; surface-mount outdoor housing, IP54/65
- Bus powered (10 mA); ETS application S8-BFTLFT
Technical Specifications
| Article no. | 30805121 |
|---|---|
| KNX bus voltage | KNX 21-32 VDC, bus load 10 mA |
| Power consumption | approx. 10 mA from KNX bus |
| Auxiliary supply | None stated (bus powered) |
| Measuring | Soil moisture (Watermark) 0..~220,000 Pa (31.9 psi) (~0-220 kPa (0 to 31.9 psi) soil water tension); soil temperature (PT1000) -25..+50 °C (-13 to 122 °F), DIN class B; air humidity 0-100 % RH, ±3 % (20-80 % RH at 20 °C (68 °F)) else ±5 %; air temperature -25..+80 °C (-13 to 176 °F), ±0.4 °C (±0.72 °F) (5-60 °C (41 to 140 °F)) else ±0.8 °C (±1.4 °F) |
| Inputs / outputs & connections | Watermark soil-moisture + PT1000 inputs (polarity-free), S1/S2 potential-free switch inputs, S3 potential-free switch output 48 VDC / 90 mA; integrated display (kPa) |
| Protection rating | IP54/65 (bus coupler); brochure: weatherproof IP65 housing |
| Mounting | Surface-mounted (AP) outdoor housing; Watermark probe buried in soil |
| Operating temperature | -25 to +60 °C (-13 to 140 °F) (storage -25 to +80 °C (-13 to 176 °F)), 0-100 % RH non-condensing |
Downloads
(CE certified; not UL/NRTL listed — verify local code requirements before specifying in US installations)
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Most in-stock orders ship within 1–2 business days from Miami, FL. Delivery typically takes 3–5 business days depending on destination.
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