WDF-IM-3 Fan-type Indoor Heater Product Specification I. Product Overview and Scope of Application
The WDF-IM-3 fan-type indoor heater (hereafter referred to as the heater) employs a self- regulating PTC heating element, with precise temperature monitoring and control via computer software. Featuring compact size, high power output, and automatic fault protection, this heater is designed to meet diverse heating needs across various applications.
The heater is widely used in various small space heating, such as control cabinet, equipment box, small room, etc, and can also be used as electronic and electrical equipment fixed point dehumidification.
II. Product Appearance


III. Product Features
① The device is compact with a height of only 35mm, making it suitable for installation in tight spaces.
② Industrial-grade design with stable and reliable performance, designed for low-temperature environments.
③ Modular design ensures product quality and reliability.
④ It features 6 protection levels, ensuring safe usage.
⑤ Restore default settings quickly for easy use.
⑥ External temperature sensor for convenient temperature control.
⑦ ISO9000 management system ensures product quality.
4. Technical Parameters(Model: WDF-IM-3)
| heating power: 10% W | Control upper temperature limit: -25 to 50°C (adjustable) |
| Operating voltage: 220V±20%/50Hz | Control temperature lower limit: -40 to 35°C (adjustable) |
| Temperature range: -40 to 99°C | Volume: 169.5×189×35mm (main unit) |
| Fan delay: 1 minute | Net weight: 1.3kg (main unit) |
| Electrical strength: 1.5kV/60S | Leakage current (260V/30S):≤0.3mA |
| Ground resistance (32A/30S): <0.1 ohms | Default parameters: -5℃/5℃/1min |
| Insulation resistance:>10 MΩ | Service life: ≥50,000 hours |
| Temperature measurement accuracy: 0.1℃ | Control accuracy: 1℃ |
| Temperature display accuracy: 0.1℃ |
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V. Environmental Requirements
1. Operating temperature: -40 to 60°C
2. Storage temperature: -25 to 70°C
3. Working environment humidity: 5%RH to 90%RH (no condensation)
VI. Specifications of Accessories
1. Temperature sensor: 30 cm long (with magnetic adsorption).
2. Power cord: 3×0.75mm2, 1 m in length, with a 90 ° left bend at the end.
The above accessory specifications shall be subject to the contract unless otherwise stipulated.
7. Product Features
1. One-click recovery function: The setting parameters of the heater can be achieved through the "M" key to achieve the "one-click recovery" function, so that the user can control the temperature to immediately restore the factory default setting, which is convenient and fast.