JDAII.CK Anti-magnetism Elcetricity Meter Counter Exportation Model:JSQ Using National Area:Europe,Middle East Area ect. Main Technical Specification: 1、 Operating voltage:3V－5V; 2、 Pulse width:80ms－320ms; 3、 Operating temperature: －40°C－+60°C; 4、 Operating frequency: 4Hz; 5、 Service life: ≥10 years; 6、 Anti-magnetism effect:in watchcase≥1200mT; Note:Anti-magnetism effected by test method and meter outer covering installment strucure 7、 Pluse ratio:200:1;400:1