In traditional thermostats, the mechanical thermostat is being replaced by the segment-LCD screen, but the control keys are still essentially mechanical.

This thermostat design enables users to connect to the cloud and increase to a larger size colour screen for ease of use and a better Human Machine Interface (HMI). The Synergy S5D9 MCU supports cloud connectivity as well as LCD control. The RX231 MCU voice recognition reference design enables customers to quickly evaluate and implement voice control. The ISL32704E supports a fully isolated ESD RS-485 interface which adds robustness in the electronically noisy environment that exists in modern homes. The HS300x provides high accuracy and excellent stability for measuring humidity and temperature.

Key Features:

• Voice recognition reference design
• Easy cloud connection
• High performance Arm® Cortex® MCU S5D9 with built-in TFT-LCDC, capacitive touch with qualified SSP
• Fully-isolated robust RS-485 interface

Product type	Product	Description	Document	Design Asset	RS stock no
MCU	RX231	RXv2 core, FPU, DSP, 512K Flash suitable to voice recognize algorithm	Datasheet		(192-8110)
MCU	R7FS5D9	Arm® Cortex®-M4, FPU, Max to 120 MHz, 640K RAM, can support both TFT-LCD+MQTT+TLS on-chip, SSP support to quick development. Integrated cap touch.	Datasheet		(192-8160)
Power	ISL854102	1.2A/40V DC/DC, synchronous buck regulator, wide Vin 3-40V, Vout 0.6-34V	Datasheet		(192-1525)
Power	ISL80510	1A adjustable Vout 0.8-5.5V LDO	Datasheet		(193-1523)
Analog	ISL32704E	Ultra-Low EMI, smallest package isolated RS-485 transceiver, +/-15KV ESD	Datasheet		(134-9673)
Analog	HS3001	A highly-accurate, fully-calibrated relative humidity and temperature sensor	Datasheet

Please note not all stock is currently available, more will be available in the coming days.