IVT Profi Magnetic field generator 3 m³/h 1.35 W

Can be fixed directly on to your water pipes at low cost and with just a few hand turns. Once the power supply is connected, it starts working immediately. In addition, you can also configure the unit's parameters, frequency, amplitude and build-up time separately. That means you can adapt the device to meet your demands and situation.

Price: 18.99 from Conrad Electronic