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2. Zigbee - Wikipedia

   en.wikipedia.org/wiki/Zigbee

   Zigbee is an IEEE 802.15.4-based specification for a suite of high-level communication protocols used to create personal area networks with small, low-power digital radios, such as for home automation, medical device data collection, and other low-power low-bandwidth needs, designed for small scale projects which need wireless connection.

3. Solar-powered radio - Wikipedia

   en.wikipedia.org/wiki/Solar-powered_radio

   Sarkis Acopian invented the first solar-powered radio in 1957. An experimental model, developed by General Electric, weighed just 10 ounces and was capable of working without light and recharging. It contained seven solar cells, four transistors and a small battery.

4. Freeplay Energy - Wikipedia

   en.wikipedia.org/wiki/Freeplay_Energy

   In present Freeplay radios and other products, clockwork mechanisms storing energy in a mainspring have now been replaced by small batteries charged by cheaper hand-crank generators. [9] Freeplay Energy produces a variety of consumer devices in addition to radios, including flashlights, lanterns, mobile phone chargers, and foot-powered generators.

5. Comparison of single-board microcontrollers - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_single-board...

   An Arduino-compatible board that includes a Zigbee radio . The ZB1 can be powered by USB, a wall adapter or an external battery source. It is designed for low-cost Wireless sensor network applications. SunDuino2 [102] ATmega16/32/324/644 An open source enhanced Arduino-compatible board that uses an ATmega16/32/324/644 instead of an ATmega168.

6. iRiver - Wikipedia

   en.wikipedia.org/wiki/IRiver

   It has also operated a small chain of iRiver Zone stores, ... Built in lithium-polymer battery. UMS. USB 2.0 connectivity. ... also featuring DAB digital radio ...

7. Radio receiver - Wikipedia

   en.wikipedia.org/wiki/Radio_receiver

   Portable radios may have an arrangement for powering from an outlet, conserving the batteries when an outlet is available. Portable "emergency" radios may be solar and/or hand crank powered. [7] Boom box - a portable battery-powered high fidelity stereo sound system in the form of a box with a handle, which became popular during the mid-1970s.