The MK-SY020 Pulse Rate Converter can be linked to any frequency generating device e.g. flow meters, which gives TTL, pulse Reed switch or coil output, converting the frequency to an analogue signal. This can be 4-20mA loop current or a voltage output. The 4-20mA version unit is loop powered. The MK-SY020 Pulse Rate Converter can be supplied preset to a particular range alternatively the user can configure the unit themselves setting the jumper links to select the meter signal type and any one of 8 ranges from 16-35Hz up to 2000-4400Hz. Extra Info Converts Pulse Signal To A 4-20 MHA Signal,