Launch of new wireless RICOH EH Environment Sensor D201/202 requiring no battery replacement

28 Sep 2021

Maintenance-free monitoring of refrigerated, high temperature, and high humidity environments

TOKYO, September 28, 2021 – Ricoh Company, Ltd. announces the launch of new environmental sensing devices, RICOH EH Environment Sensor D201/2021. Customers can use these new devices in refrigerated, high-temperature, and high-humidity environments to acquire environmental information such as indoor temperature, humidity, illuminance, and air pressure without replacing batteries or relying on a wired connection. The acquired data, collected by Bluetooth® wireless technology or Wi-Fi™2, can be monitored in real-time on a PC or smart device, automatically saved and alerts can be set. This system contributes to the digital transformation of environmental management. by eliminating the need for manual temperature and humidity recording, battery replacement, and wiring at locations such as food processing and manufacturing facilities, as well as retail stores.

Usage scenarios for the RICOH EH Environmental Sensor D201/D202
D201_02 RICOH EH Environment Sensor D201
RICOH EH DSSC2832a RICOH EH DSSC2832a: A solid-state dye-sensitized solar cell module (DSSC)
D202_02 RICOH EH Environment Sensor D202
RICOH EH Relay for WiFi RICOH EH Relay for Wi-Fi™


These new products are the successors to the RICOH EH Environment Sensor D101, launched in October 2020. They are equipped with the latest solid-state dye-sensitized solar cell (DSSC) module, the RICOH EH DSSC Series, which has improved power output by 20%. Unlike its predecessor, the new D201/202 can operate under a temperature range of -30°C to 60°C. In addition, the improved packaging for the D202 is waterproof and dustproof, significantly expanding usage scenarios.

In pursuit of realizing “A World Without Charging,” Ricoh will continue developing technologies to increase the output power and durability of environmental power generating devices. This will expand their applications as independent power sources for sensing devices, light-emitting devices, and switches.

1  Availability in Europe from in the first half of 2022
2  Wi-Fi connectivity requires the “RICOH EH Relay for Wi-Fi™”

Usage scenarios
  • Temperature and humidity control for factories and warehouses
  • Temperature control in food processing and manufacturing industries
  • Temperature control of refrigerators and freezers
  • Temperature, humidity, and light control of office space

  1. Operates in low light: Can be used in dim lighting, such as near warehouse or factory walls or recessed areas
  2. Wide temperature range: Operates under a temperature range of -30°C to 60°C
  3. Compact size: W43mm x D41mm x H14mm1, small enough to be installed in a variety of locations
  4. Multi-sensing function: Measures temperature, humidity, illuminance, atmospheric pressure, and voltage of the built-in lithium-ion battery
  5. Interface with PCs and smart devices: Software available for Windows® PC and smart device (Android™)
  6. Enhanced product lineup: IP442 waterproof and dustproof model3

1  For RICOH EH Environment Sensor D201
2  IP: IEC (International Electrotechnical Commission) standard
3  RICOH EH Environment Sensor D202 model

Relevant Information
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* Bluetooth and Bluetooth Low Energy are registered trademarks owned by Bluetooth SIG, Inc.
Wi-Fi is a trademark of the Wi-Fi Alliance.
Windows is either a registered trademark or a trademark of Microsoft Corporation in the United States and/or other countries.
Android is a trademark of Google Inc.
Intel and Intel Atom are trademarks of Intel Corporation in the United States and/or other countries.
All other company names or product names in this News Release are company trademarks or registered trademarks.