Venetian blind drives do fine work: raising, lowering, and tilting slats to the exact angle that keeps glare out and daylight in. DNH supplies elero's JA series, compact drives for indoor and outdoor venetian blinds with the wear-free, noiseless soft brake and maintenance-free planetary gears that make elero the quiet choice for offices, hotels, and homes.

Key advantages

Silent soft brake

The wear-free, noiseless soft brake stops the blind without rattling, starting and stopping gently.

Slat angles to the degree

Slow-travel mode and belt length compensation position slats precisely for daylight and glare control.

Wired, radio or SMI bus

Hardwired, bidirectional radio, and SMI bus variants integrate with KNX and LON building systems.

Built to be forgotten

Maintenance-free planetary gears, splash-proof housing, thermal protection, and an emergency crank option.

Product range

An overview of key product specifications. Compare products across our product range and partner brands to find the right fit for your application.

Elero: Venetian Blind Drives

Elero Venetian Blind Drives

Motorised venetian blinds regulate sunlight and indoor climate: enough daylight in, summer heat out, and slats tilted to the exact angle the room needs. The compact JA series drives indoor and outdoor blinds can be operated individually, in groups or centrally, and runs from −20 to +60 °C. Radio, SMI bus, and emergency-crank variants cover everything from single windows to full building automation.

 
JA Comfort
JA Comfort SMI
JA / JA Soft
JAR / JAR Soft
JA NHK
Voltage
1~230 V AC, 50 Hz
1~230 V AC, 50 Hz
1~230 V AC, 50 Hz
1~230 V AC, 50 Hz
1~230 V AC, 50 Hz
Rated torque
4–9 Nm
4–9 Nm
6–20 Nm
6–20 Nm
9 Nm
Rated speed
26–50 rpm (6 rpm slow travel)
26–50 rpm (6 rpm slow travel)
26 rpm
26 rpm
26 rpm
Power consumption
115–156 W
115–156 W
115–230 W
115–230 W
125 W
Operating time (S2)
4–5 min
4–5 min
4–5 min
4–5 min
5 min
Length (from)
243 mm
243 mm
203–284 mm
274–329 mm
328 mm
IP rating
IP54
IP54
IP44
IP44
IP44
Limit switch
Electronic
Electronic
Mechanical
Mechanical
Mechanical
Control
Wired or radio
Wired
Wired only
Wired only
Wired only
Key feature
Standstill detection; belt length compensation; slow travel for slat angle
SMI bus interface; integration KNX/LON; position feedback
Mechanical limit; soft brake (Soft variant)
Additional limit switch; for blinds with stop point
Emergency crank; for power-failure operation
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Why this brand

elero venetian blind drives are built around the details that matter in daily use: a wear-free, noiseless soft brake, maintenance-free planetary gears, splash-proof housings, and integrated thermal protection. Standstill detection and belt length compensation keep long blinds aligned, and the SMI bus models integrate directly with KNX and LON building automation.

elero's JA drives are proven at scale: the five-star Kameha Grand hotel runs 514 of them, chosen for silent operation where guest comfort is the product. DNH supplies and supports the range across Southern Africa.

Typical Applications

This product range is deployed across multiple sectors.

Office & commercial glare control Hotels & hospitality External / facades Daylight & indoor climate control Building automation