4 Channel Dry Contact Relay WiFi + RF 433MHz with Software Change Service to SUPLA
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4-Channel Wi-Fi Relay with 433 MHz Remote Control Support and Supla Software Pre-installed
The relay is perfect for many practical applications, such as:
- Irrigation automation – controlling garden or lawn sprinklers.
- Remote gate and garage opening – operating gate drives with a pulse (dry contact).
- Control of wickets and access control – e.g., activating an electric lock.
- Cooperation with low-voltage systems – sensors, signaling devices, control modules.
- Roller shutter control – pulse configuration (up/down) using separate channels.
Key Features
- Control via Wi-Fi network (2.4 GHz) and RF 433 MHz remote controls (fixed code).
- Pre-installed Polish Supla software.
- Independent control of each of the 4 channels.
- Remote viewing and control from anywhere via the Supla application.
- Manual control with buttons on the housing.
- Supports up to 4 RF 433 MHz remotes per channel.
- Power supply: 7–32 V AC/DC.
- Maximum load: 10 A / 2200 W per channel, up to 40 A / 8800 W total.
- Software version: GUI Generic for Supla.
Supla GUI Generic Software
Supla is Polish open-source software for controlling building automation. Thanks to this, many compatible devices are available.
After flashing the Supla software, the device integrates with the Supla ecosystem, enabling:
– remote control of relays via the Supla mobile application,
– viewing the current status of each channel,
– pairing and configuration analogous to other Supla devices.
Supla software, Supla logo, and Supla name are the property of AC SOFTWARE SP. Z O.O.
Independent Dry Contact Outputs
Each of the 4 channels offers an independent dry contact (voltage-free) type connection. This ensures electrical separation between the control system and the actuating device – greater safety and application flexibility.
Controller Description
Controller Connection Method
1. Common Power Source for Controller and Load
The simplest diagram: module and load powered by the same voltage (e.g., watering solenoid valves).
2. Powering the Controller from USB or 7–32 V, and the Load from another source (e.g., 230 V)
Pairing the Module with the Supla Application
- Enter pairing mode: press the RESET (R1) button 10 times.
- Instructions for adding to the Supla cloud: Instructions for adding devices to Supla
- Add using the Add device wizard in the Supla application (manual data entry via 192.168.4.1 is not recommended).
Adding 433 MHz Radio Remotes
Each channel can be controlled by a 433 MHz fixed-code remote control (up to 4 remotes per channel).
Adding a remote: Hold the channel button (e.g., R1, R2...) for about 3 seconds until the RF LED flashes blue once, release, and press the button on the remote.
Deleting remotes: Hold the channel button for about 5 seconds until the RF LED flashes twice – the remotes will be deleted.
Example remotes from our offer compatible with the module:
Technical Specification
- Supply Voltage: AC/DC 7–32 V
- Maximum Load: 10 A / 2200 W per channel
- Maximum Total Load: 40 A / 8800 W
- Wi-Fi Standard: IEEE 802.11 b/g/n 2.4 GHz
- Wi-Fi Security: WPA/WPA2
- RF Frequency: 433 MHz (fixed-code remotes)
- Number of Channels/Relays: 4
- Relay Output Type: Dry contact (voltage-free)
- Dimensions: 145 × 90 × 34 mm
- Operating Temperature: −10 °C to +40 °C
- Operating Humidity: 5%–95% RH (non-condensing)
- Software: Supla (GUI Generic)
- Buttons for Manual Control: Yes, for each channel
- LED Indicators: Yes
- Chip: ESP8285
Package Contents
- 4-Channel Relay with Pre-installed Supla Software × 1
FAQ – Quick Answers
- Are the outputs dry contact? Yes, all 4 channels are dry contact.
- How many remotes can I add? Up to 4 fixed-code 433 MHz remotes per channel.
- Does it work without the Internet? Local control (buttons/remote) always works; remote viewing requires connection to the Supla cloud.
- What power supply is needed? 7–32 V AC/DC (one power supply for the module; the load can have an independent power supply).
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