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๐ก Key Summary: A contact-signal repeater that extends wireless range and reduces dead zones
YH-RF300 REP is a wireless contact signal repeater designed for YH-RF300 wireless transceiver (TX/RX) systems to compensate for communication shadow areas (dead zones) caused by distance, walls, and equipment structures. It reliably receives the alarm (dry contact) signal from a transmitter and re-transmits it to help build long-range links over 1 km and more stable wireless networks with fewer dropouts.
โ Wireless dry-contact signal repeating: Receives the alarm (dry contact) signal from a transmitter (TX) and re-transmits it for stable delivery to the receiver (RX).
โ Reduces dead zones (shadow areas): Helps overcome weak-signal sections caused by walls, buildings, and equipment, supporting more reliable alarm transmission.
โ Extended-range configuration: When longer distance than the basic operating range (1 km in open areas) is required, additional repeaters can be installed to expand wireless coverage.
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| Item | Specification |
| Model | YH-RF300 REP (Wireless Contact Repeater) |
| Operating Power | DC 8 ~ 30V |
| Current Consumption | Max 150mA (Low-power design) |
| Frequency | โข 447.8625 ~ 447.9875Mhz BAND (Data transmission / 11 channels) โข 447.2625 ~ 447.5625Mhz BAND (Safety system / 25 channels) |
| Receiver Sensitivity | -117 dBm (TX power: +10 dBm) |
| Transmission Distance | Over 1000m (Line of Sight, 100% receive success at 4,800bps) |
| Antenna | SMA TYPE ANTENNA (External) |
| I/O | 8 points (COM, NO) Dry-contact input signal repeating |
| Contact Rating | AC 250V 5A / DC 30V 5A |
| Channel Setting | 32 frequency channels selectable (DIP S/W) |
| Repeater Reset | TACT S/W : SW2 |
| Dimensions | 190mm X 280mm X 130mm (Excluding antenna) |
| Operating Temperature / Humidity | -10หC ~ 60หC, Max 85% RH |
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