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no battery or external power needed
CyberPower battery cartridge for OL6000ERT3UP/BPE240V30ART3U (=2x RBP0073 required for each UPS)
An ideal kit for anyone needing to etch a circuit board - complete with an assortment of double-sided copper boards
48 x 48 x 71cm
Short Circuits Three Project - Universal Timer Printer Hardware no battery or external powerAssembly Required This timer is adjustable between 1 second to 3. 5 minutes. An LED illuminates during the timing period and a buzzer sounds at the end. Kit supplied with PCB, buzzer & electronic components. 12VDC power required. Instructions sold separately or withing the Short Circuits book range, Short Circuits Books are available for Download Here For More Information on Kids science electronics projects Click Here for Kits for Kids Specifications
US$ 149.50
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