CR2032 Lithium Ion 3V 250mAh button cell battery. Great for powering low power processors or blink an LED for weeks at a time.
If you are interested in Internet of Things (IoT) or M2M projects check our open source sensor platform Waspmote which counts with more than 100 sensors available to use 'off the shelf', a complete API with hundreds of ready to use codes and a low consumption mode of just 0.7µA to ensure years of battery life.
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