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Each of these have a unique id, so multiple tags can be used in a single project and may be purchased in any quantity....
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13.56Mhz Smart Read / Write Card
Chip: UID
Material: PVC
Frequency: 13.56MHz
Material: High quality ABS
Operation frequency: 13.56MHz...
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Breakout board for A20 module
On board two antenna jack.
On board camera jack.
Package includes main bo...
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Working frequency: quad-band network, 850 / 900 / 1800 / 1900MHz
Working voltage: 4.5~5.5V DC (On-board voltage regulat...
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High frequency stability and low coherence and interference. Receiver sensitivity as high as -110dBm - operating current...
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Bluetooth Transceiver Module With TTL Output HC-06
CH340G original chip.
3.3V and 5V output voltage to supply the programmed controller.
With power light PWR, TXD and RX...
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Bluetooth XBee/ZigBee Arduino Shield
Direct support Arduino UNO, Arduino Duelimanove
Compatible with all Xbee interface devices:
Xbee 1mw / 2mw
Xbee Pro
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Operating Voltage: 5V DC Supply
Reading Distance: 6-10 cm.
Read frequency: 125 kHz.
EM4001 64 – bit RFID tag compat...
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EM18 RFID Reader Module- [125Khz] – RS232
Model Name/Number EM-18 RFID
Current < 50mA
Size 32mm(length) x 32mm(width) x 8mm(height)
Operation Voltage 5 VDC
...
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ESP-01 ESP8266 Serial WIFI Transceiver Module
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ESP-12F ESP8266 Wifi Wireless Module
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ESP12S ESP8266 Serial Wi-Fi Module
The smallest 802.11b/g/n Wi-Fi SOC module
UART baud rate up to 4Mbps
General AT commands can be used quickly
Low powe...