In Category 11, Category 9 is electronic products (small devices)

I misread it. I thought it was a solar water heater. I didn’t see the question. I added that it is in Category 11. Category 9, help you check

(5) Amperemeter 090036, indicator (electricity) 090042, ammeter 090092, capacitance tester 090108, power meter 090203, leakage indicator

090213, Electrical loss indicator 090213, Electrical measuring instrument 090214, High frequency instrument 090267, Frequency meter 090268, Sensor (electricity) 090304, Ohmmeter 090368, Oscilloscope 090374, Voltmeter 090500

※ Electricity meter C090057, test pen C090058, complete set of electrical calibration device C090059, voltage regulator for electrical measurement C090060

(3) Electric coil 090001, magnet 090023, electromagnetic coil 090024, amplifier 090037, amplifier tube 090038, capacitor 090140, conductor 090141, photoelectric switch (electrical appliance) 090168, glass covered with a live conductor 090224, fuse 090269, choke (impedance) 090441, choke

Flow coil (impedance) 090441, resistor 090427, rheostat 090432, vacuum tube (radio) 090491, variable inductor 090493, fuse

fuse 090505, alloy wire (fuse ) 090505, inductor coil bracket 090514, photoelectric tube 090531, discharge tube for non-illumination 090559, transistor

Tube (electronic) 090624

※Emitting tube C090087, ultra-high frequency tube C090088 , Electron beam tube C090089, Potentiometer C090090, Oscilloscope tube C090091, Electron tube C090092,

Semiconductor device C090093, Magnetic materials and devices C090094, Ceramic filter C090095, Atomizer sheet C090132

(4) Transformer (electrical) 090049, distribution box (electrical) 090054, terminal block (electrical) 090089, cable armor 090098, current collector 090129, gate box (electrical) 090131, rectifier 090132 , Electrical conduit 090142, Electrical conduit 090142, Closer 090143, Electrical connector 090144, Connection box (electrical) 090145, Distribution panel 090146, Precious metal electrical plug 090147, Electrical plug 090148, Electric regulating equipment 090150, Transformers

090153, Electric switches 090164, Plugs, sockets and other contactors (electrical connectors) 090166, Sockets, plugs and other connections (electrical connections) 090166,

Rectifier 090167, voltage reducer (power supply) 090168, circuit breaker 090191, switchboard (electrical) 090197, distribution console (electrical) 090198, conduit (electrical) 090216, control panel (electrical) 090217, wire connection 090219, electrical appliances Connector 090220, Electrical coupler 090220, Relay (electrical)

090222, Armature (electrical) 090305, Inverter (electrical) 090310, Automatic timer switch 090353, Wire connector (electrical) 090442 , Thermionic lamp

and tube 090506, Dimmer (regulator) (electrical) 09060

6. Light regulator (electric) 090606, dimmer (electric) 090606, cable connector cover 090626, power socket cover 090667, ballast for lighting equipment 090672, solenoid valve (electromagnetic Switch) 090675, surge protector 090676, stage lighting regulator 090682

※ Transformer C090096, sensor C090097, degausser C090098, voltage regulator C090099, regulated power supply C090100 , starter C090102,

Low voltage power supply C090103, high and low voltage switch board C090104, starter C090105, fuse C090106, bus duct C090107, electric heating protective sleeve C09

I'm sorry , I really don’t know which one you are talking about, take a look for yourself