Open box Sonoff RL560 – Extension Cable for Sensors, Length 5 Metres, RJ9 4P4C Connector
Description
What does "open box" mean?
Open-box products are returned products with opened or damaged packaging, but fully checked from a technical point of view and completely functional. They come with the same warranty as new products.
Sonoff RL560 – Sensor Extension Cable, 5 Metre Length, RJ9 4P4C Connector
Sonoff RL560 is a high-quality extension cable, specially designed for the new generation of Sonoff sensors that use the RJ9 4P4C connector. This cable gives you the flexibility needed to place temperature and humidity sensors or soil moisture sensors at considerable distances from the control relay, and is compatible with devices such as Sonoff TH Elite and Sonoff TH Origin.
Main Advantages
Generous Extension: With a length of 5 metres, the RL560 lets you monitor ambient conditions in hard-to-reach places while keeping the main relay in an area with a good Wi-Fi signal or close to the power source.
Plug & Play connectivity: Equipped with RJ9 4P4C connectors (male-female) with hot-plug support, the cable installs instantly, with no soldering, wire cutting or complex configuration needed.
Superior Signal Quality: Built with quality insulating materials, the cable minimises signal loss and interference, ensuring accurate data transmission from the sensor to the smart device, even over distance.
Strength and Durability: The PVC outer sheath is flexible and tough, suitable for installation through protective conduits or along skirting boards, ensuring a long service life.
Modular Compatibility: You can chain several RL560 cables to achieve even greater distances (up to a recommended total length of 60 metres for temperature/humidity sensors), providing extended coverage for greenhouses or warehouses.
Use Cases
Greenhouse or Garden Monitoring: Place the soil moisture sensor (MS01) right at the plants' roots, while the Sonoff TH relay stays protected in a sealed box 5 metres away.
Temperature Control in Pools/Boilers: Extends the waterproof temperature sensor (WTS01/DS18B20) to reach the water tank, keeping the smart control unit inside the house, sheltered from moisture.
Warehouse monitoring: Install the relay at the warehouse entrance for easy access, and use the RL560 to bring the temperature and humidity sensor (THS01) right into the centre of the storage area.
Technical Specifications
Model: RL560
Connector type: RJ9 4P4C
Cable Length: 5 metres
Insulation Resistance: 5MΩ
Conductor Resistance: 10Ω
Sensor compatibility: Sonoff THS01 (Temperature & Humidity), WTS01/DS18B20 (Temperature, waterproof), MS01 (Soil moisture)
Relay Compatibility: Sonoff TH Elite and TH Origin series (THR316, THR320, THR316D, THR320D)
Package contents: 1 x Sonoff RL560 extension cable (5 metres).
Why choose the Sonoff RL560?
It is the key accessory that removes distance limitations in your automation projects. The RL560 gives you the freedom to design the monitoring system exactly as you need, without compromising on sensor positioning or the safety of the control devices.
Practical use cases
- Moves the THS01 temperature and humidity sensor to the middle of a greenhouse or warehouse, while the Sonoff TH relay stays near the power supply, in an area with good Wi-Fi signal.
- Brings the WTS01 waterproof sensor to a water heater, tank or swimming pool, while keeping the control unit sheltered from moisture.
- Extends the MS01 soil moisture sensor to vegetable beds or large pots, for irrigation automation (up to 10 m in total for MS01).
- Several RL560 cables connected in series extend the THS01/WTS01 sensors up to 60 m from the relay.
Technical specifications:
| Model | SONOFF RL560 |
| Type | 5m extension cable for RJ9 4P4C sensors |
| Length | 5m |
| Connector | RJ9 4P4C, hot-plug |
| Conductor resistance | max 10Ω |
| Insulation resistance | min 5MΩ |
| Compatibility | extends THS01/WTS01 sensors up to 60m and MS01 up to 10m, TH Elite/TH Origin series |
The RL560 is the right choice for anyone who wants a tidy and safe installation of Sonoff smart home equipment.