3 Pin PCB Terminal Block 7.5mm Pitch 20A Rating ZB429 1.8E Inductive heating and melting

Inductive heating and melting

and you can connect it to the internet using your SIM card data plan

Metal and plastic

These are Carbon Film Resistor with a value of 20k ohm 1/8W and tolerance of ±5%

It is a non-waterproof device with good built quality

3 Pin PCB Terminal Block 7.5mm Pitch 20A Rating ZB429 1.8E Inductive heating and meltingTerminal blocks (also known as screw terminals) are electrical connectors that allow you to connect wires in the same circuit without cutting or splicing them. Screw with 3 pins. The Terminal Block is a multifunctional and small terminal block. It's used to connect wires to the circuit board. The terminal block's small size allows it to connect two conductors on a PCB where space is at a premium. The wires are held in place by screws on this terminal