125 KHz EM ID card is a read-only contactless IC card and is driven by electromagnetic waves emitted by card readers. The reader can only read out ID number stored in the EEPROM chips but can not write in information. The radio frequency communication circuit is the key technology applied to this card which can receive the electromagnetic waves and to suit the power and time demand of the card chip. The excellent phase-shiftkeying and other skills are provided to keep the perfect wireless communicating between card and readers. These contactless ID cards feature quicker in operation, convenient with contactless capacity, as well as reliable, thus they are widely used in various fields.

Applications
EM ID cards are designed and widely used for different purposes in various fields. Basically, they are used for identification and positioning, such as contactless access cards, social security cards and attendance cards.

In public occasions, such as exhibitions, parks, hotels, restaurants and more, EM ID cards are designed and used as ticket cards, discount cards and so on.

In productions, such as logistics, postal services, transportation, packages of goods, etc. EM ID cards are designed and used as anti-fake labels, electronic tags, tracking tags, disposable tickets and so on.

EM ID cards also can be used, to some extent, for charges management backed up with computers, by setting up a database containing cardholders' information and equipping relevant readers for reading cards. Once the cards are read by readers, the matched dates in the database will be identified and the necessary operation is done instantly. It is widely used in charges management of dining halls.

Generally, skills used for producing EM ID cards include the offset or silk-screen, portrait print, slotting, add magnetic stripe, etc.

Commonly used chips for EM ID cards

Brand name	μEM	μEM	Mango
Model name	EM4100	EM4102	TK4100
Frequency	125Khz	125Khz	125Khz
ISO/IEC	7816	7816	7816
EEPROM Memory size	Read only	Read only	Read only
Range of operation	3-15 cm	3-15 cm	3-15cm

Specification of ISO 125Khz PVC ID card

Dimension	L86×W54×T0.84mm
Material	PVC
Weight	6g
Surface	Glossy or matt
Working temperature	-25℃ to +70℃
Storage temperature	-40℃ to +85℃

Commonly Used Packages
a. 50 pieces/ plastic bag, 200 pieces/ box, 2000 pieces/ case or 5000 pieces/ case
b. 100 pieces/ plastic bag, 200 piece/ box, 2000 pieces/ case or 5000 pieces/ case
c. 1 piece/plastic bag, 10 plastic bags/ string, 20 strings/ box, 2000 pieces/ case or 5000 pieces/ case

Recommendations
ID keychain, ID wristband, clamshell card, laundry tag

We are experienced manufacturer and supplier of EM ID card based in China. To fully meet the need of our customers, we also product RFID key fobs, special cards and metal mounts tags, etc. They are widely applied in various fields, such as telegram, transportation, logistics, foodstuff, etc.

If you are interested in our RFID products, please contact us.