Description
Overview
The WJ501 is a wall-mounted balanced ventilation unit that supplies filtered outdoor air and exhausts stale indoor air while the ceramic heat exchanger recovers thermal energy. It supports remote or WiFi/Tuya smart control, offers multiple ventilation modes, and installs through a single exterior wall hole — no central ductwork needed.
Key Features
- Ceramic heat exchanger with up to 90% heat recovery
- Remote control or WiFi/Tuya app control with CO₂ monitoring and automation
- HEPA and activated carbon filtration reduces pollen, dust, PM and odours
- Brushless DC motor with sound-sealed design — under 30 dB
- Three modes: Fresh Air, Exhaust, and 65-second Cycle Mode
- Single-hole wall installation with telescopic duct
Technical Specifications
| Model | WJ501 |
| Unit Diameter | 160 mm |
| Exterior Tube | 163 mm |
| Installation Tube (cuttable) | 250–500 mm |
| Inside Cover | 242 × 242 mm |
| Total Power | 2.5 / 3.0 / 4.5 / 8.5 W |
| Airflow | 20 / 48 / 54 / 60 m³/h |
| Speed (RPM) | 630 / 1100 / 1600 / 2200 |
| Voltage | 12 VDC or 100–240 V, 50/60 Hz |
| Air Temperature | -20 °C to +50 °C |
| Heat Exchange Efficiency | Up to 90% |
| Wall Thickness | 20–45 cm |
| Certification | CE, SAA |
Applications
- Bedrooms and nurseries — quiet fresh-air exchange for sleep spaces
- Apartments and renovations without central duct systems
- Home offices and small rooms — reduces odours, humidity and stale air
100% pre-shipment inspection for function, dimension, filter placement and noise verification, with hardware warranty and replacement service.
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