💡 Key Summary: A waterproof wireless leak alarm transmitter that reliably sends alerts even in outdoor environments
YH-RF400L TX is a waterproof wireless leak alarm transmitter for outdoor use, designed for harsh field conditions around outdoor tanks, piping, and equipment. It transmits alarm signals wirelessly without cabling when a connected leak detector (sensor) triggers an alarm, enabling rapid alarm system deployment in outdoor areas where wiring is difficult. In addition, the transmitter itself provides on-site indication with a warning lamp and audible buzzer, helping operators respond faster. Optional configurations (warning beacon / explosion-proof options, etc.) are available to match site requirements.
● Waterproof housing for outdoor use: Designed for rain, snow, and humidity to ensure stable operation in outdoor installation conditions.
● Wireless alarm transmission: Sends alarm signals wirelessly when a leak occurs, making installation and expansion easy in outdoor areas where wiring is difficult.
● Built-in on-site alarm (lamp & buzzer): Along with transmission to the receiver, the transmitter activates its own warning lamp and buzzer for fast on-site verification and initial response.
● Sensitivity adjustment: Detection sensitivity can be adjusted to suit site conditions, helping reduce false alarms and improve reliability.
● Multi-channel options: Available in 1 to 4 channels so you can select the right configuration based on site scale.
| Item | Specification |
| Model | YH-RF400L TX (Waterproof Wireless Leak Alarm Transmitter) |
| Power Supply | AC 220V 60Hz |
| Power Consumption | Max 20W |
| Power Indicator | Yellow Lamp ON (Power ON) |
| Alarm Indicator | Red Lamp ON (Alarm Activation) |
| Operating Temp / Humidity | -10 to 40℃, 0 to 80% RH |
| Buzzer Sound | 70 dB or higher (at 1 m) |
| Frequency | • 447.8625 to 447.9875 MHz BAND (Data Transmission / 11 Channels) • 447.2625 to 447.5625 MHz BAND (Safety System / 25 Channels) |
| Receiver Sensitivity | -117 dBm (Transmit Power: +10 dBm) |
| Transmission Range | 1,000 m or more (Line of Sight, 100% receive success, 4,800 bps) |
| Antenna | SMA TYPE ANTENNA (External) |
| Channels | 1 to 4 CH (Expandable) |
| Dimensions | 316(W) x 543(H) x 150(D) mm (Excluding vertical antenna) |
♣ Dimensions may vary depending on options (Explosion-proof / Warning beacon). (Antenna size excluded)
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