1. Multi-function spot welder controller_standard control box.
2. Multi function spot welder controller constant current and 9 conditions control boxes.
3. Multi function spot welder controller constant current and 15 conditions control boxes.
4. Multi function spot welder controller constant current and 30 conditions control boxes.
Micro controller: 1. DJ-MU1: standard control box. 2. DJ-MU2: 9 times electric connection control box. 3. DJ-MU3: 15 conditions settable control box. 4. DJ-MU4: constant current and 30 conditions control box.