rotameter + Water Flow Meter,Plastic Tube Type 25-250L/H Instantaneous Water Flow Meter Flowmeter

Hilitand 100-1000L/H Rotameter Plastic Tube Type Water Liquid Flow Meter LZS-15 DN15 Instantaneous Flowmeter for Water Industrial Field

Shelly 1 Mini Gen3, WiFi & Bluetooth Smart Switch Relay, 1 Channel, 8A, Home Automation, Dry Contacts, Lights Remote Control, Compact Size, Alexa & Google Home, iOS & Android, No Hub Required (2 Pack)