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SIM800L V2 5V GSM GPRS MODEM TTL with antenna
SIM800L V2 5V GSM GPRS modem with TTL serial interface and external antenna—ideal for SMS, calls, and IoT communication projects.
Description
The SIM800L V2 5V GSM GPRS Modem TTL with Antenna is a compact and powerful cellular communication module that enables GSM voice calls, SMS, and GPRS data transmission for embedded and IoT applications. This V2 version includes an onboard 5V power regulation, allowing direct connection to Arduino, ESP32, ESP8266, Raspberry Pi, and other TTL serial devices without complex power circuitry.
The module communicates via UART (TTL) serial interface using standard AT commands. It supports quad-band GSM (850/900/1800/1900 MHz) for wide network compatibility. Supplied with an external antenna, the modem ensures reliable signal reception and stable communication.
Common applications include SMS alert systems, GPS trackers, remote monitoring, smart meters, security systems, and IoT projects.
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Text to Speech TTL Module (Serial to Speech)
-  Single row 0.1″ header for easy connection to a host system
- Power requirements: +5 VDC
- 30 mA idle
- 46-220 mA active (depending on speech parameters and output load)
- Â Communication: Asynchronous 9600 bps serial (8N1)
- Dimensions: 1.25″x1.5″x0.37″
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Text support rate is better
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 Interface operation is simpler
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5V single power supply.
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Output directly connected to the speaker, can drive 4 ohms 3W / 8 ohm 2W speakers
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Busy status output, can be connected to the microcontroller IO or indicator light, no need to be left floating.
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 Voice effect optimization
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 Module miniaturization and easy integration
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Dimension: 33*27.5mm
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With mounting holes
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