User's Manual

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2) Search Bluetooth Device ID in APP and connect “UL212 FUEL”
6.3.2 Clean the target zone around the middle of tank bottom
1) Find a 5*5cm zone around the middle of tank bottom
2) Please make sure get rid of the original tank float sensor and return
pipe
3) Metal Tank with painting needs sand paper to polish before fix probe
4) Aluminum, Stainless Steel or Fiber tank will not need sand paper