ESP8266 ESP32 SIM800L module GPRS GSM Micro SIM Card Quad-band TTL serial port
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$3.15 - $3.56
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Shipping per piece: $4.14
PCI express to 1 serial 1 parallel card computer adapter Asix99100 RS232 DB9 & DB25 Computer Accessories
SIM800L GPRS GSM Module MicroSIM Card Core BOard Quad-band TTL Serial Port SIM800L
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$2.12 - $2.36
Min Order: 25 pieces
Shipping per piece: $0.65