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The Electron 3G is a development kit for creating cellular-connected projects and products. It comes with a Particle SIM card 3 free months of Particle's monthly data plan for IoT devices.
The Electron kit includes Particle's development tools and cloud platform for managing and updating your new connected hardware.
The Electron is a GSM-only device, and does not support CDMA networks.

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The asset tracker kit comes with a Particle SIM card with service in more than 100 countries worldwide, and includes 3 months of Particle's 1MB monthly data plan for IoT devices. All Electrons also include Particle's development tools, access to a cloud platform with messaging, and a SIM dashboard for managing and updating your new connected hardware.