Specification: Decode time: Less than 0.2s Communication: Wiegand 26 bit Card type: EM card,EM compatible card, EM4100/TK4100 (Can' support some encrypted cards,such as HID, Cobra, APCiK etc) Frequency: 125khz Induction Distance: Common Card up to 30-40cm (11.8inch-15.7inch) / Long range proximity card up to 80-100cm (31.5inch-39.4inch) Power supply: 12VDC Data transfer range: max.80mA Current: 200mA Working Temperature: 0~70℃ / 32℉~158℉ Working Humidity: Less than 80% Dimension (LxWxH): 230x230x35mm / 9.1inchx9.1inchx1.4inch Built-in antenna: Yes Built-in buzzer: Yes Application: Parking, elevator, logistics industry,etc. Notification: The Reading range is a complex parameter, So called inch1M rangeinch,only means the unit works with the special long range card,that is a 2mm thickness credit size card. Normally, the unit can also work with normal EM cards, normal 2mm / 0.08inch thickness card can reach 60cm / 23.6inch range, 0.8mm / 0.03inch card can reach 40cm / 15.7inch range. Specification: B Color: Black Material: plastic Package Contents: 1 x medium distance card reader Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.