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BackHttp://www.keyelco.com/product-pdf.cfm?p=798 Keystone type 3001 coin cell cr1216 cr1220 cr1225 1xPP3 (9V) battery holder, http://www.keyelco.com/product-pdf.cfm?p=710 AA CR2 A battery holder.
- SPDT switch per step, to.
- 'B' means Both hands; something.
- 7.3mm height, https://omronfs.omron.com/en_US/ecb/products/pdf/en-b3fs.pdf C&K Components SPST SMD PTS645.