💡 Key Summary: High-Capacity Wireless Leak Alarm Receiver Expandable up to 44 Channels via Slot (Card) Modules
YH-RF500L RX is a card-type multi-channel wireless receiver that wirelessly receives leak alarm signals transmitted from remote field transmitters and enables centralized monitoring from a single location. Built on a slot (card) modular architecture, the system can be expanded step-by-step to match site scale, and supports an efficient leak monitoring setup even in large facilities where cabling work is difficult.
● Wireless Leak Alarm Reception: Receives leak alarm signals transmitted from remote transmitters and provides real-time alarms.
● Minimal Cabling: No signal wiring is required, making installation easier in hard-to-wire areas and existing facilities.
● Central Leak Monitoring: Monitors leak alarms from widely distributed zones at one point to improve response speed.
● Expandable Slot (Card) Structure: Add required channels step-by-step via slot modules, ideal for large-scale sites. (Expandable up to 44 channels)
● Maintenance Efficiency: Module-level inspection and replacement improves uptime and maintenance convenience.
● Unified Design: Matches the standard design tone of Yoohantech leak alarm receivers (YH-200L series) for system consistency.
| Item | Specification |
| Model | YH-RF500L RX (Card-Type Wireless Leak Alarm Receiver) |
| Power Supply | AC 220V 60Hz |
| Power Consumption | Max 30W |
| Power Indicator | Yellow lamp ON (Power ON) |
| Alarm Indicator | Red lamp ON (Alarm Activation) |
| Operating Temp./Humidity | -10–40°C, 0–80% RH |
| Buzzer | 70dB or higher (at 1m distance) |
| Frequency | • 447.8625–447.9875 MHz band (Data transmission / 11 channels) • 447.2625–447.5625 MHz band (Safety system / 25 channels) |
| Receiving Sensitivity | -117 dBm (Tx power: +10 dBm) |
| Transmission Range | Over 1000m (Line-of-sight, 100% reception success, 4,800bps) |
| Antenna | SMA type external antenna |
| Channels | 1–10 CH (Expandable to multi-channel) |
| Backup Power | • Ni-Cd Battery 24V/1300mA (≤ 6 channels): up to ~90 min • Ni-Cd Battery 24V/1300mA (≤ 10 channels): up to ~70 min • Ni-Cd Battery 24V/2600mA (≤ 20 channels): up to ~66 min |
♣ Dimensions may vary depending on explosion-proof and warning light options. (Antenna excluded)
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| Circuits |
Dimensions |
| 1–2 |
H: 207 x W: 370 mm |
| 3–4 |
H: 293 x W: 400 mm |
| 5–6 |
H: 379 x W: 400 mm |
| 7–8 |
H: 465 x W: 400 mm |
| 9–10 |
H: 551 x W: 400 mm |
| 11+ | Custom-built upon request |
♣ Dimensions may vary depending on explosion-proof and warning light options. (Antenna excluded)
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[ 90dB Warning Light ]
[ 105dB Warning Light ]
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