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ESP-NOW is a wireless communication protocol defined by Espressif, which enables the direct, quick and low-power control of smart devices, without the need of a router. ESP-NOW can work with Wi-Fi and Bluetooth LE, and supports the ESP8266, ESP32, ESP32-S and ESP32-C series of SoCs. It’s widely used in smart-home appliances, remote controlling, sensors, etc.
Quick Response
Ultra-low Power
Good Compatibility
Long-distance Communication
Multi-hop Control
ESP32-C2-Based Coin Cell Switch
This is a low-power Wi-Fi switch based on ESP32-C2. It is different from Bluetooth LE and Zigbee wireless switches, because this solution needs no gateway and can be used with the ESP-NOW protocol, which enables quicker responses. Our Wi-Fi switch has a long battery life, and can be the basis of a wide range of products, thanks to the tiny size of the cell battery.
01
No Gateway and Receiving-IC Required
The switch directly sends data to the smart light or smart wall-switch equipped with Espressif Wi-Fi SoCs, without additional SoCs required.
02
Quicker Controllable Response
After you flip the switch, the device will respond within 150ms.
03
Reliable Bidirectional Data Transmission
The stable master-slave bidirectional data transmission ensures the high success rate of Wi-Fi packet delivery.
Key Benefits
ESP32-C2 is powered off in the sleep mode. One CR2032 coin battery can last up to 5 years if the switch is flipped approximately 10 times a day.
Ultra-Low Power Consumption
04
With its simple topology, Espressif's Wi-Fi switch is really easy when it comes to device pairing. The switch supports one-to-one, one-to-multi, and multi-to-multi control modes.
Easy-to-Configure
05
Espressif's Wi-Fi switch supports such products as sticker switches, multi-button switches, touch switches, and knob switches.
Diversified Product Forms
06
ESP32-Based Wi-Fi Remote Controller
The Wi-Fi remote controller based on ESP-NOW enables the instant control of ESP32-powered smart devices, such as toy cars, toy planes, robots, etc. The control can achieve a millisecond-level delay, and communication over distances that are much longer than in Bluetooth transmission.
Key Benefits
Easy-to-Control
01
ESP-NOW supports both the “one-to-many” and “many-to-many” types of device control. This way, a remote control needs to be paired with only a few smart devices, in order to materialize the complex control of multiple devices within a network.
Good Compatibility
02
ESP-NOW coexists with Wi-Fi and Bluetooth LE. Thus, the paired device supports both Wi-Fi remote control and Bluetooth control via a mobile app.
Small in Size
03
ESP32 is highly integrated and small in size, making it easy to build powerful remote control products.
Long-distance Communication
04
With a transmit power of up to +21dBm, even devices that are 200 meters apart from each other in an open space can be controlled easily.
ESP-NOW
ESP-NOW is a wireless communication protocol based on the data-link layer, which reduces the five layers of the OSI model to only one. This way, the data need not be transmitted through the network layer, the transport layer, the session layer, the presentation layer, and the application layer. Also, there is no need for packet headers or unpackers on each layer, which leads to a quick response reducing the delay caused by packet loss in congested networks.
Coexists with Wi-Fi and Bluetooth LE, and supports various series of Espressif SoCs with Wi-Fi connectivity.
It has a fast and user-friendly pairing method that is suitable for connecting “one-to-many” and “many-to-many” devices, while also controlling them.
Occupies fewer CPU and flash resources.
Can be used as an independent protocol that helps with device provisioning, debugging, and firmware upgrades.
ECDH and AES algorithms make data transmission more secure.
The window synchronization mechanism greatly reduces power consumption.
Please click below to get more details about the ESP-NOW protocol.
ESP-NOW Video
ESP-NOW provides a flexible and low-power data transmission to all interconnected devices. It can also be used as an independent protocol that helps with device provisioning, debugging, and firmware upgrades.
Getting Started
If you want to prototype and evaluate your application, or if you have any questions about ESP-NOW, please get in touch with Espressif’s customer support team.