Pros
- The simplicity of the device. It is quite functional for checking the integrity and correctness of the switching of conductors. You can detect: short circuit, breaks, wrong order.
Cons
- Hull fragility. The battery cover broke from quite moderate pressure to shift. After 7 months of rare use, LEDs 7 and 8 burned out in the transmitter. The integrity of the lines has to be looked at by the receiver. Price. IMHO, it could be cheaper.