LINKSTYLE Temperature and Humidity Sensor, Wi-Fi Thermometer Hygrometer Monitor with Wireless Hub for Automation with Home Appliances, App Notifications, Compatible with Zigbee Devices, 4-Pack Bundle: Amazon.com: Industrial & Scientific
000 Paddle Sensor 16 * 9 * 7 SPDT R3/4 Liquid Water Oil Sensor Control Automatic Paddle Type Flow Switch 15A 250V IP54 HFS-20: Amazon.com: Industrial & Scientific