13.56MHz 2.5-3.6V RFID Reader Writer Module SPI Interface IC Card RF Sensor Product Introduction: 1.Operating Frequency:13.56KHz 2.Operating Voltage:2.5-3.6V 3.Operating Current:20MA 4.Card Read Distance: 0~50mm (M1) 5.Suppporting Type: MIFIRE1 S50 S70 UltraLight Pro 6.Operating Temperature:-25-85centigrade