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SIM900A GSM-GPRS Modem
MPX10DP Differential Pressure Sensor
5V to 30V DC
read our blog explaining applications of relays
or two 4-wire 2-phase stepper motors
RFM69 FSK Transceiver Module (182) heart rate sensor SIM900A GSM-GPRS ModemRFM69 FSK Transceiver Module The RFM69 series wireless communication module is intended for global free application at the 434 MHz ISM band. It is a low power, high bandwidth module with low cost, stability, and product consistency, capable of transmitting data packets up to 300Kbps. The module has broad applications, including daily life activities that require wireless connection, industrial control, access control, attendance, surveillance, and