| Series | Mine Explosion-proof FYF Series |
| Model | FYF20C |
| Size | 240×68×54 mm |
| Weight (excluding battery) | 0.35kg |
| Material | Flame-Retardant Conductive Engineering Plastics |
| Protection Class | IP67 |
| Power Supply | 7.4VDC/1850mAh |
| Wireless Range | ≥20m |
| Operating Current | 80mA |
| Transmit Power | ≤10mW |
| Frequency Range | 433 MHz Band: 427.000–436.300 MHz 470 MHz Band: 472.350–485.775 MHz |
| Antenna Type | built-in |
| Operating Temperature Range | Temperature: -25°C to 70°C Humidity: 0% to 97% RH (non-condensing) |
| Optional Features | Identification Card, 3-Axis Sensor |
| Transmitter Operation Modes | Button-operated |
| Explosion Protection Type | Intrinsically Safe |
| Explosion-proof Mark | Ex ia I Ma |
| Display | 2.5″ |
| Applicable Standards | GB/T 3836.1-2021 *Explosive atmospheres — Part 1: Equipment — General requirements* GB/T 3836.4-2021 *Explosive atmospheres — Part 4: Equipment protected by intrinsic safety “i”* MT/T 1137-2011 *General technical specifications for mining infrared remote controllers* |
| Dimensional Drawing |  |
The FYF20(C) is Ex ia I Ma intrinsically safe certified and MA certified (MFH220058) for use in underground coal mines, meeting GB/T 3836.1-2021, GB/T 3836.4-2021, and MT/T 1137-2011 standards for explosion proof radio remote control equipment.
Unlike standard industrial wireless controls, the FYF20(C) is intrinsically safe by design, meaning its internal circuitry limits electrical energy to prevent sparks — a critical safety feature for industrial crane remote control and machinery operation in explosive coal mine atmospheres. Techwell also provides OEM customization for the FYF20(C). Quote now!
The FYF20(C) provides a reliable wireless range of ≥20 meters, suited for close-proximity underground control, and is powered by a 7.4VDC/1850mAh rechargeable battery for extended use in demanding mining environments.
Yes. The FYF20(C) is IP67-rated, protecting it against dust ingress and temporary water immersion, making it a durable industrial radio remote controller for the harsh, moisture-prone conditions typical of underground coal mining. Quote now!
The FYF20(C) includes a 2.5″ display along with optional ID card recognition and a 3-axis sensor, supporting secure, controlled operation as part of a broader industrial crane remote control system used in mining and heavy industrial applications.
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