ITead offers a new model of small one- and two-way switches. These devices are based on the modern and powerful CC2652P1F chip. This chip has a built-in amplifier and should provide excellent signal strength and connection range. But real applications show that is not true.
Sonoff Basic ZBR3 with the configurable firmware
You may use the latest version of my configurable firmware with Sonoff Basic ZBR3. But only one external sensor is tested (Si7021)
Zigbee Switch Configurable Firmware (+Router)
This firmware allows you to create a Zigbee switch device with a flexible configuration of inputs and outputs. I’ve created a base firmware for CC2530, CC2530 + CC2590 , CC2530 + CC2591 and CC2530 + CC2592 chips. The attached configurator for Windows can write your device configuration to the selected base firmware. Then you can save the customized version to a separate HEX file and upload it to your device.
Inputs and outputs can work independently. So you may create a switch without a control button, or a simple button only.
The device with this firmware also works as a router.
Note: the firmware is designed for constantly powered devices.