Litherra Zenith Control Unit

Central Control. Smart Automation. Connected Anywhere.

The Litherra Zenith Control Unit is the central control hub of the Zenith System, designed to manage switching, monitoring, and communication across your motorhome electrical system. Featuring six switchable relays controlled directly from the Zenith 7 Display, the control unit allows users to operate everyday loads such as lighting, water pumps, heating, air conditioning, and communication equipment such as Starlink from a single central interface.

With eight sensor inputs available, the unit can connect to temperature sensors and fluid level sensors, providing clear monitoring of systems including fresh water, waste water, and fuel tanks. The Zenith Control Unit also acts as the primary connection point for Zenith components, allowing devices such as DC-DC chargers, MPPT controllers, inverters, and battery monitoring equipment to feed system data directly to the display.

Built-in Bluetooth, wired communication, and WiFi connectivity allow the system to connect to the internet, enabling remote monitoring from anywhere in the world, with access to both real-time and historical system data. Remote switching capability also allows appliances connected to the relay outputs to be controlled from outside the vehicle when required.

Zenith System Compatibility & Expansion

Like all Litherra Zenith products, the Zenith Control Unit is designed to operate as part of a fully integrated and expandable system. It provides the central communication link between Zenith displays, charging systems, inverters, sensors, and distribution modules, ensuring all connected equipment can share data and operate as one unified system.

As additional Zenith components are added, the control unit allows the system to grow while maintaining a clean and organised installation architecture, with full monitoring and control available through connected displays or remote access.

Technical Specifications

Electrical Specifications

• Input Voltage Range 10–100 VDC
• Static Power Consumption < 1.2 W

Relay & Control Functions

• 6 programmable relay outputs
• Switch control via connected display
• Fault alarm Built-in buzzer

Communication Interfaces

• Bluetooth (BLE) Built-in
• Wi‑Fi — 2.4GHz / 5GHz
• 2 × TTL ports
• 2 × RS232 ports
• 1 × RS485 port (isolated)
• 6 × RS485 / CAN ports (non-isolated)
• 1 × Dedicated RS485 / CAN BMS port
• CAN RV‑C protocol Supported

Display Compatibility

• Zenith 7 Display Supported
• Zenith 4 Display Supported

Wireless & Remote Features

• Bluetooth connectivity Built-in
• Wi‑Fi connectivity Built-in
• Mobile app monitoring: Supported Supported: Supported
• OTA firmware upgrades Supported

Physical Specifications

• Dimensions 183 × 84 × 28.5 mm
• Weight 265 g
• Cooling Method Natural cooling
• Protection Rating IP20

Environmental Specifications

• Operating Temperature −35°C to 65°C