Eelectron BI04F01KNX KNX potential-free binary input 4-fold

SKU: BI04F01KNX
✗ 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 $179.90 USD
Regular price -27% $245.28 USD Sale price $179.90 USD
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The Eelectron BI04F01KNX is a 4-channel DIN-rail binary input for KNX that brings conventional pushbuttons, switches, door and window contacts and motion detectors onto the bus from the distribution board. Inputs can be set for short runs (up to 30 m (98 ft)) or long runs (up to 100 m (328 ft)) with end-of-line resistor supervision, which lets the module watch magnetic contacts and detectors with a tamper-aware level of safety that plain inputs do not offer.

It does more than switching: all 4 inputs can be reconfigured as analog NTC probe inputs to publish temperatures or run a complete 2-stage PI thermostat, two inputs can host plug-in SM03E01ACC (CO₂ + temperature) or SM03E02ACC (VOC/eCO₂ + temperature) smart sensors, and 10 logic blocks plus a pulse counter are available for metering and interlock tasks. Typical uses are hotel rooms, offices and retrofits where existing low-voltage wiring already terminates in the panel.

Key Features

  • 4 dry-contact inputs for pushbuttons, switches, sensors; functions for on/off, dimming, shutters, scenes and sequences
  • Long-distance mode up to 100 m (328 ft) with 1.8 kΩ (1/8 W) EOL resistor line supervision; short-distance mode up to 30 m (98 ft)
  • Pulse counter on inputs configured as short-distance digital
  • NTC analog mode on all 4 inputs: temperature to bus or a full 2-stage PI thermostat module for heating/cooling, valves and 2/4-pipe fan coils
  • Two inputs accept plug-in smart sensors SM03E01ACC (temperature + CO₂ 10–1000 ppm) or SM03E02ACC (temperature + VOC / eCO₂)
  • 10 logic blocks with logical, threshold, algebraic and conditional operators; predefined algorithms for proportional control and dew point
  • Per-input status LED on the front panel
  • Bus-powered, ≤ 15 mA; 4-module PC-GF housing; 250 group addresses / 250 associations

Technical Specifications

Power supply Via KNX bus, 21–32 V DC (SELV)
Current consumption ≤ 15 mA
Inputs (digital mode) 4 dry-contact inputs; scanning voltage 20 V DC; long cable test current 6 mA, short cable 1 mA
Max cable length Long distance 100 m (328 ft); short distance 30 m (98 ft) (twisted)
EOL supervision 1.8 kΩ, 1/8 W end-of-line resistor
Inputs (analog mode) NTC probes TS01A01ACC (-20 to +100 °C) or TS01B01ACC (-50 to +60 °C) on all 4 inputs; max cable 30 m (98 ft) twisted
Smart sensor inputs 2, for SM03E01ACC / SM03E02ACC plug-in sensors
Logic blocks 10
Group addresses / associations 250 / 250
Mounting DIN rail, 4 modules; LV distribution switchboard
Enclosure PC-GF, IP20 (EN 60529)
Operating temperature -5 °C to +45 °C (23 °F to 113 °F)
Storage temperature -20 °C to +55 °C (-4 °F to 131 °F)
Relative humidity max 90 % non-condensing, indoor use
Standards EN 63044-3; EN 63044-5-1 / EN 63044-5-2; EN 50491-2; LVD 2014/35/EU; EMC 2014/30/EU
Certifications KNX certified; CE
ETS application BI0xF01KNX binary input application
Weight (net) 0.14 kg (0.31 lb)
Manufacturer part no. / GTIN BI04F01KNX / 8054144522272

Related Products

Family: BI08F01KNX (8 inputs), BI16F01KNX (16 inputs, mains-assisted) and BI08H01KNX (8 x 100–250 V inputs). Accessories: NTC probes TS01A01ACC / TS01B01ACC; plug-in sensors SM03E01ACC / SM03E02ACC. Compact in-wall alternatives: IO22D02KNX, IO44D02KNX, IO62D02KNX.

CE certified; not UL/NRTL listed — verify local code requirements before specifying in US installations.

Datasheet (PDF) · Available to order.

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