Is a counterweight confirmed for the selected ASIN?
Not from the current selected Amazon title and extracted product facts. The homepage uses counterweight wording, so package contents should be confirmed before production copy claims it.
Can I switch any 15A pump directly?
Not automatically. Motor starting current and load type can differ from a simple current rating. Check the pump documentation, control circuit and protective requirements.
What determines the start and stop levels?
Tank geometry, tether length, mounting point, float travel and the control arrangement determine the switching range.
What should I send for model matching?
Send liquid type, tank dimensions, start/stop levels, pump voltage/current, plug or wiring method, cord length, mounting constraints, quantity and destination.