š GLOBAL LAUNCH
FeedCurrent/KinCony Unveils F4 Programmable Controller
UltraāCompact 4āChannel Relay Board
UltraāCompact 4āChannel Relay Board
ESP32-S3 core, removable OMRON relays, zeroācode Home Assistant integration ā all in a 138Ć127Ć65mm footprint.
January 12, 2026 ā The F4 redefines spaceāsaving home automation.
January 12, 2026 ā The F4 redefines spaceāsaving home automation.
Home Automation, Shrunk to Fit
The FeedCurrent/KinCony F4 is an ultraācompact programmable relay controller featuring removable OMRON relays. Powered by the ESP32-S3 SoC, it delivers 4 highācurrent relay channels, dualāmode safety control, and a rich set of I/Os ā all packed into a DINārailāmountable enclosure that saves 40% panel space compared to the F8 model.
š” Ideal for: smart home hubs, apartment automation, lighting control, and any residential or light commercial project where space is at a premium.
Four Breakthrough Features
š
Compact Relay Array
4CH removable OMRON relays ā the smallest footprint (138Ć127Ć65mm) with 16A highācurrent load capacity. Easy replacement when needed (power off).
š”ļø
DualāMode Safety Control
Physical buttons for direct relay override (works even during system failure) + optoāisolated dry contact inputs with 500m antiāinterference range.
š
IndustrialāGrade Reliability
DS3231 precision RTC, -40ā~85ā operating range, vibrationāresistant DIN rail mounting ā built for demanding environments.
š”
ZeroāCode Integration
Home Assistant autoādiscovery, preāinstalled KCS v3 firmware, oneāclick flashing for ESPHome/Tasmota. Works out of the box.
Specifications Comparison: F4 vs F8
| Category | Item | Model F4 | Model F8 |
|---|---|---|---|
| Hardware Core | Main Chip | ESP32-S3 SoC | ESP32-S3 Wi-Fi SoC |
| Core Output | Relay Channels | 4CH removable OMRON relays | 8CH removable OMRON relays |
| Max Load | 250VAC/16A or 30VDC/16A per channel | 250VAC/16A or 30VDC/16A per channel | |
| Analog Input | Signal Type | 2CH 0-5V DC + 2CH 4-20mA | 4CH 0-5V DC + 4CH 4-20mA |
| RealāTime Clock | RTC Chip | DS3231 (with battery socket) | DS3231 (with battery socket) |
| Expansion & I/O | Wired Comm. | RS485 + Ethernet (RJ45 100Mbps) | RS485 + Ethernet (RJ45 100Mbps) |
| Wireless | RF Module | 433MHz RF receiver | 433MHz RF receiver |
| Digital I/O | GPIO Configuration | 4CH 1āWire GPIO + 2CH free GPIO | 8CH 1āWire GPIO + 4CH free GPIO |
| Storage & Display | Storage | SPI bus SD card slot | SPI bus SD card slot |
| Display | SSD1306 I2C LCD | SSD1306 I2C LCD | |
| Safety | Manual Control | 4 physical buttons (relay override) | 8 physical buttons |
| Dry Contact Input | 4CH optoāisolated (ā¤500m cabling) | 8CH optoāisolated | |
| Software | Dev. Environment | Arduino IDE / MicroPython / ESPāIDF | Arduino IDE / MicroPython / ESPāIDF |
| Firmware & Integration | Smart Integration | KCS v3 / ESPHome / Tasmota / Tuya | KCS v3 / ESPHome / Tasmota / Tuya |
| Protocol Support | MQTT (Home Assistant autoādiscovery) | MQTT (Home Assistant autoādiscovery) | |
| Size | Dimensions | 138Ć127Ć65mm | 138Ć127Ć108mm |
| Power Supply | Power Characteristics | 12/24V DC (default 12V OMRON relay) | 12/24V DC (default 12V OMRON relay) |
ā
Spaceāsaving advantage: F4 saves 40% installation space versus the F8 model, enabling highādensity deployment in tight electrical cabinets while maintaining full 16A load capacity.
RealāWorld Applications
š” Smart Home Hub
Integrate 433MHz RF devices (curtain controllers, sensors) and control lighting, blinds, and appliances via Home Assistant.
š Light Industrial Monitoring
4ā20mA sensor input + 500m dry contact monitoring ā suitable for small workshops and remote equipment supervision.
š¢ Building Automation
DIN rail mounting with Tasmota firmware enables clustered relay control for lighting, HVAC, and access systems.
DeveloperāFriendly Design
š Data Logging
SPIābased SD card slot for local data storage.
SPIābased SD card slot for local data storage.
š„ļø OLED Display
Realātime IP address display for AP / LAN mode.
Realātime IP address display for AP / LAN mode.
š Dedicated GPIOs
Free pins for direct sensor connectivity.
Free pins for direct sensor connectivity.
š” RF Integration
Builtāin 433MHz receiver for wireless remotes.
Builtāin 433MHz receiver for wireless remotes.
š¦ Get the F4 Programmable Controller
A compact 4āchannel programmable relay controller with removable OMRON relays ā now available for global orders. Perfect for spaceāconstrained home automation and light commercial projects.
Bulk pricing available | Free technical documentation
