Card-Type Wireless Leak Alarm Receiver

💡 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.

Slot-module design expandable up to 44 channels | centrally monitors distributed alarm signals

Features

● 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.

Specification

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	-20 – 60°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	1–44 CH (Expandable to multi-channel)
Backup Power	• Ni-Cd Battery 24V/1300mA (Up to 6 channels): approx. 90 min • Ni-Cd Battery 24V/1300mA (Up to 10 channels): approx. 70 min • Ni-Cd Battery 24V/2600mA (Up to 20 channels): approx. 66 min

♣ Dimensions may vary depending on explosion-proof and warning light options. (Antenna excluded)

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Dimension

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)

Options

Warning light-s.png [ 90dB Warning Light ]

Warning light.png [ 105dB Warning Light ]

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Yoohantech Co., Ltd.