SK-RCU18P Premium Standard RCU Host Unit

The SK-RCU18P is a modular Guest Room Control Unit (RCU) independently developed by SOUKA. It enables intelligent control of air conditioning, lighting, curtains, room occupancy sensing, and other in-room devices, while supporting energy management and customized scene modes. The system can be managed through both local and cloud servers, allowing remote control, firmware upgrades, debugging, configuration, and centralized management of front-end smart devices. Through intelligent energy management, the SK-RCU18P helps reduce carbon emissions and operating costs. Its smart control capabilities also enable hotels to provide guests with a more personalized, comfortable, and efficient in-room experience.

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Product Detail Specifications

SK-RCU18P

Premium 18-way Room Control Unit (RCU)

Features:

1. Built-in DC 12V switching power supply with wide voltage input (AC 85V-277V), no-load power consumption < 0.3W, over-voltage and overload protection, certified with 3C/CE/UL etc.
2. Interfaces include 17 channels of 220V/10A high-power circuits, 1 channel of 220V/30A AC output, 10 channels of dry contact input, 6 channels of backlight output, and 2 channels of RS485 bus communication.
3. Supports expansion with 6 additional high-power circuits and various dimming modules, plus 8 additional low-voltage dry contact points.
4. Utilizes high-surge-resistant, moisture-proof relays with a mechanical life exceeding 100,000 cycles.
5. Main control chip is a Freescale MKE automotive-grade ARM series chip, offering low heat generation, fast processing, and long service life.
6. Backend control system adopts a B/S architecture, allowing information viewing and backend modification/debugging on mobile platforms. Front-desk computers only require a web browser (no software installation) for quick room status monitoring..

Functions and interface parameters
Built-in DC 12V switching power supply	AC Wide Input Voltage: 85V ~ 277V, 50/60 Hz
	No-load Power Consumption: < 0.3W
	Provides power for the internal circuitry of the main unit and can also supply 12V/1A output for external devices.
	Features over-voltage and overload protection.
	Certifications: 3C, CE, UL, etc.
Ethernet Port	1 x 100M RJ45 Port
Ethernet Port	TCP protocol for network connection
RS485 Bus	2 channels for internal room communication
High-Power Circuits	17 channels of 220V/10A high-power circuits.
High-Power Circuits	1 channel of 220V/30A AC output.
Dry Contact Input	10 channels.
IO Output	6 channels.
Expansion Capability	Supports expansion with 6 additional high-power circuits and various dimming modules.
Expansion Capability	Supports expansion with 8 additional low-voltage dry contact points.
Supported Peripherals	485-based devices such as thermostats, IR blasters, switches, motors, smart control panels, smart voice assistants, etc.
Supported Peripherals	Can support up to 128 switches, compatible with 485 switches and dry contact switches operating within the same system.
Management Functions	Room Console: Centrally monitors basic room information (room number, status, type, AC mode, service info, messages), main unit status, and other devices; enables remote control.
	Control Overview: Real-time status check of each RCU, including lights and AC.
	Room Type Management: Create and edit room types, manage floor plans and device naming, configure the smart control panel interface.
	Room Management: Manage room creation, grouping, and centralized control of bound devices.
	Guest Room Management: Batch processing of room parameter settings (mainboard, room type, IP/MAC address, etc.); configure room status, keycard delay, seasonal mode, etc. Supports import/export. Real-time device control based on room type. Preset AC modes based on room status, set scene modes by room type, and assign them to specific rooms.
	Doorplate Management: Manage doorplate devices, support import/export, batch upgrades, and upgrade package management. Supports custom doorplates, setting display content, recognition duration, and volume. Register guest info, view information and door opening records.
	Media Asset Management: Upload and manage multimedia resources with flexible storage path adjustment.
	System Configuration: Supports cloud data backup. View energy consumption analysis, operation logs, service events, RCU online/offline logs, RS485 device online/offline logs. Configure whether the doorplate captures an image when someone rings the bell and displays a prompt on the in-room TV or smart control panel. Features include host search function, control restoration package management, and linked device settings.
Physical Parameters Specifications
Chassis Dimensions	28711768mm
Operating Temp./Humidity	-10℃-45℃、40%-70%
Storage Temp./Humidity	-40℃-70℃、40%-95%

Commercial DIN-Rail RCU Controllers: Edge-Node Autonomy & Distributed Hospitality Intelligence

Empowering luxury hotels, resorts, and smart healthcare facilities with localized edge computing, high-inrush magnetic latching relays, and native multi-bus protocol bridges. Engineered for 100% offline operational resilience and up to 30% HVAC energy reduction.

Autonomous Edge-Computing Logic & 100% Offline Operational Resilience

Every SOUKA Room Control Unit (RCU) runs dedicated localized edge firmware. All in-room interactions—including wall switch presses, multi-scene lighting loops, motorized curtains, and thermostat controls—execute locally within the physical RCU hardware with sub-50ms response latency. Even during building-wide LAN disconnects, IoT server downtime, or cloud dropouts, in-room environmental controls remain 100% functional and offline-autonomous.

16A / 30A Magnetic Latching Relays & Zero-Cross Inrush Current Suppression

Engineered to withstand the extreme inrush currents of modern commercial LED lighting, SOUKA RCUs integrate industrial-grade 16A / 30A magnetic latching relays with hardware-level zero-cross switching detection. This technology clamps capacitive inrush spikes (up to 500A/2ms) at the zero-voltage AC crossing point, completely eliminating contact welding, minimizing heat dissipation, and guaranteeing over 100,000 heavy-duty switching cycles.

Native Multi-Bus Interoperability (RS-485 / KNX / Modbus) & 0-10V/DALI-2 Dimming

SOUKA RCUs provide native hardware ports for industrial fieldbuses—including optically isolated RS-485, Modbus-RTU, and KNX—alongside optional Zigbee 3.0 wireless mesh. The controller integrates multi-channel 0-10V, DALI-2, and Trailing-Edge Phase-Cut dimming loops alongside Modbus/0-10V HVAC proportional valves. Paired with real-time mmWave presence radar telemetry, it automates temperature setbacks in empty rooms, cutting property HVAC energy waste by up to 30%.

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