I'm checking out Sonoff ZigBee sensors by ITEAD - what's the budget sensors like?
Getting started with Sonoff ZIGBEE 3.0 USB DONGLE PLUS - NotEnoughTech
Sonoff Zigbee sensors - NotEnoughTech
Sonoff Presence Sensor (SNZB-06P) is not what you think - NotEnoughTech
Sonoff Presence Sensor (SNZB-06P) is not what you think - NotEnoughTech
NodeRED Archives - NotEnoughTech
Is Sonoff SNZB-02D good? YES! How good well
This will hunt unresponsive ZigBee sensors
Sonoff Mini switch with ZigBee - hands on! : r/homeautomation
SNZB-03 - SONOFF Official
27 Sonoff SNZB-04 Zigbee door/window battery-operated opening/closing sensor
Best ZigBee temperature and humidity sensors
Adding Sonoff sensors in Zigbee2MQTT and other systems - NotEnoughTech
ITead SONOFF Zigbee Bridge Pro (ZBBridge-P) new CC2652P and ESP32 based Zigbee Gateway to WiFi Bridge - Zigbee - Home Assistant Community
Getting started with Sonoff ZIGBEE 3.0 USB DONGLE PLUS - NotEnoughTech