LED indication in HOST product
Operation
Matrix COSEC CMP EM PROX RFID (radio-frequency identification) is the wireless non-
contact use of radio-frequency electromagnetic fields, for the purposes of identifying and
tracking tags attached to objects.
The reader continuously emits RF carrier signals, and keeps observing the received RF signals
for data.
The presence of a tag modulates the RF field, and the same is detected by the reader.
The passive tag absorbs a small portion of the energy emitted by the reader, and starts sending
modulated information when sufficient energy is acquired from the rf field generated by the
reader.
The reader demodulates the signals received from the tag antenna, and decodes the same for
further processing.
This EM PROX reader works with 125 KHz tags in credit card size shape cards
The EM4100 protocol is used. When you approach an RFID Tag close enough (5-8 cm) to the
reader's coil, the reader will read the 10-digit unique ID of the Tag and transmit it as ASCII
characters through the serial output with 2400 bits per second.
The circuit in the buzzer in end product/Door controller beeps when a Tag is read successfully.
