single loop with 12 to 24 V AC/DC power supply
double loop with 12 to 24 V AC/DC power supply
single loop with 220 to 240 V AC power supply
double loop with 220 to 240 V AC power supply
single loop with 12 to 24 V AC/DC power supply and memory effect
double loop with 12 to 24 V AC/DC power supply and memory effect