Relay Controllers

Product Overview

8-channel relay controller models, connectivity tiers, and key specifications.

What is an HPzenAi Relay Controller?

The HPzenAi relay controller is an 8-channel 12V DC switching device that controls solenoid valves, hydraulic valves, motor starters, lights, pumps, and other relay-driven field equipment. It connects to the HPzenAi platform via RS485 to a gateway, or directly via built-in Wi-Fi, SIM, or RF radio, enabling remote on/off control, daily and weekly scheduling, manual override, and sensor-triggered automation from the HPzenAi app. All schedules are stored on the controller itself and execute independently of internet connectivity.

Highlights

• 8 Independent Relay Channels: Switch up to 8 loads independently — each channel with its own schedule, manual override, and sensor trigger
• Multi-Protocol Connectivity: RS485, Wi-Fi, BLE, SIM cellular, and RF radio — choose the tier that fits the site
• Offline Schedule Execution: Schedules stored on the controller run reliably even when the internet or gateway is unavailable
• Sensor-Triggered Automation: Link to level sensors and flow meters on the same gateway for automatic event-driven control

Product Description

The HPzenAi relay controller is a DIN rail mounted IP40 enclosure device with 8 independently switchable relay output channels, each rated at 12V DC / 5A. All models include RS485 Modbus RTU communication for gateway integration, plus Wi-Fi (2.4 GHz) and BLE for direct device connectivity. Higher-tier models add a nano-SIM slot for cellular fallback and/or an RF radio for extended-range field communication.

Attribute	Detail
Output Channels	8 × independent relay channels
Output Voltage	12V DC per channel
Max Current per Channel	5A
Communication	RS485 Modbus RTU + Wi-Fi 2.4 GHz + BLE (all models)
SIM / Cellular	Nano-SIM slot on XR1, XR2, X1, X2 models
RF Radio	Extended-range RF on XR1, XR3, X1, X3 models
Relay Terminal Types	COM, NO, NC per channel
Mounting	35 mm DIN rail or M4 direct panel mount
Enclosure Rating	IP40 — install in weatherproof enclosure for outdoor use
Power Supply Input	12V DC via HPzenAi power adapter (PWR-1P-12V-15W or PWR-3P-12V-12W)
Schedule Storage	Local on-device — executes without cloud connectivity
Surge Protection	Use SPD-1P or SPD-3P on AC input to protect the system

Applications & Use Cases

The HPzenAi relay controller is the central switching hub in any HPzenAi IoT installation, providing app-managed control over any 12V DC relay-driven device across irrigation, pumping, building, and agriculture applications.

Application	Description
Multi-Zone Irrigation	Control up to 8 solenoid or hydraulic valve zones with individual daily/weekly schedules per channel
Pump On/Off Switching	Start and stop submersible or surface pumps remotely via motor starter wired to relay output
Greenhouse Automation	Schedule ventilation fans, heating elements, and irrigation together on a single controller
Farm Water Management	XR1/X1 with SIM connectivity manages remote farm valves and pumps without local Wi-Fi
Building Water Services	Control isolation valves and booster pump relays in apartments, hotels, and commercial buildings
Tank Fill Automation	Level sensor triggers via gateway automation start and stop filling valves based on tank water level
General Industrial Switching	Switch any 12V DC relay-driven load — lights, alarms, solenoids, pilot valves — from the HPzenAi app

Available Models

All models share the same 8-channel relay hardware, app platform, and firmware. The difference between models is connectivity tier — choose based on the communication infrastructure available at the installation site. XR models include an external RF antenna module for extended range; X models are the compact equivalent.

Series and Models

Full Multi-Protocol

XR1 / X1 — RS485 + Wi-Fi + BLE + SIM + RF

• XR1:
• X1:

SIM Cellular

XR2 / X2 — RS485 + Wi-Fi + BLE + SIM

• XR2:
• X2:

RF Extended Range

XR3 / X3 — RS485 + Wi-Fi + BLE + RF

• XR3:
• X3:

Local Network

XR4 / X4 — RS485 + Wi-Fi + BLE

• XR4:
• X4: