Wireless Multi-Zone Hydronic Thermostat and Wiring Centre Kit

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Key Functions

Cable-Free Deployment – Wireless RF thermostat communication

High Scalability – 8-unit cascaded expansion (up to 64 zones)

Seamless BMS Integration – Modbus communication protocol

Ecosystem Interoperability – Zigbee wireless connectivity

Risk & Stock Reduction – Boiler & heat pump universal control

Turnkey Efficiency – Thermostat & wiring centre integration

Home Product Residential Thermostats Hydronic Thermostats Wireless Multi-Zone Hydronic Thermostat and Wiring Centre Kit

Product Overview

SAS936WCH wireless all‑in‑one hydronic heating/cooling kit delivers multi‑zone control without cables. Battery‑powered RF thermostats communicate wirelessly with the central wiring centre – ideal for retrofits and historic buildings. Supports up to 8 wiring centres cascaded for 64 zones. Features Modbus, Zigbee, and boiler/heat pump universal control. CE certified, factory direct, OEM/ODM ready.

Product Features

Wireless RF Thermostat Communication

Each battery-powered RF thermostat (868/433MHz) eliminates all control wires between the thermostat and wiring centre. This drastically reduces on-site labor and material costs, especially in retrofit projects where wall-breaking is impractical.
8-Unit Cascaded Expansion (Up To 64 Zones)

Up to 8 SAS936WCH wiring centres can be cascaded together. Slave units sync heat/cool mode with the master, and only the master controls boiler/heat pump output. This enables seamless expansion from 8 to 64 zones for large-scale developments, hotel clusters, or multi-building projects.
Modbus Communication Protocol

Native Modbus RTU (RS485) allows seamless integration with building management systems (BMS) for centralized monitoring, fault diagnosis, and energy reporting for commercial and large-scale residential projects.

Zigbee Wireless Connectivity

Optional ZigBee module allows the thermostats to connect directly to popular smart home hubs (e.g., Amazon Echo Plus, Samsung SmartThings). This enables cross-device automation, such as lowering heating when windows are opened or integrating with lighting schedules.
Boiler And Heat Pump Universal Control

Integrates flexible hardware logic to support traditional boilers (heating only) and modern reversible heat pumps (heating + cooling). A single SKU works for floor heating only projects or heating + floor cooling systems, drastically reducing inventory risk and simplifying procurement.
Thermostat And Wiring Centre Integration

Combines multi-zone wireless thermostats and the central controller into a pre-certified package, delivering turnkey efficiency that ensures 100% system compatibility and elevates project bidding power.

Product Selector

Model No.	Heat/cool	Heat only	Pipe	Speed fan	Programmable	Window card	Room card	External Sensor	Modbus RTU	WIFI	Manual
SAS936BWCHB-7-DFZ(N)+SCU217DE-485(N)	√				√			√	√	√	download

Product Parameters

Wiring centre

Power source:100-240VAC 50/60Hz

max current:10A

Load current output:250VAC 8(5)A

Dimensions:298 x 88 x 64mm

Thermostat

Power supply: 2x1.5V AA alkaline batteries(LR6)

Battery life:1 year

Temperature display: 0~50°C

Temperature setting range: 5~50°C

Temperature display accuracy: 0.1°C

RF wireless transmit range: 100m in open air

Zigbee wireless transmit range: 30m in open air

Dimensions:100*100*19.6mm

Product Dimensions

Product Installation

Product Application Scenarios

The SAS936WCH kit is ideal for retrofit projects, historic buildings, home extensions, and any situation where running control cables is impractical. It also scales to large‑scale developments: by cascading up to 8 wiring centres, the system supports 64 independent zones, making it suitable for hotel clusters, multi‑building residential complexes, and commercial retrofit portfolios. Native Modbus and optional Zigbee provide flexibility for BMS integration or smart home ecosystems.