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BackHttps://www.keyelco.com/userAssets/file/M65p4.pdf Keystone type 105 battery holder with leaf spring, Keystone, https://ken.keyeuro.eu/cat/590.pdf AA battery cell holder Keystone type 3034 coin cell vertical Panasonic CR-2032/VS1N battery, https://industrial.panasonic.com/cdbs/www-data/pdf2/AAA4000/AAA4000D348.PDF battery CR-2032 coin cell Panasonic CR-2477/VCN battery, https://industrial.panasonic.com/cdbs/www-data/pdf2/AAA4000/AAA4000D502.PDF battery CR-2477 coin cell vertical battery CR-2025 coin cell vertical Panasonic CR-3032/VCN battery, https://industrial.panasonic.com/cdbs/www-data/pdf2/AAA4000/AAA4000D508.PDF battery CR-3032 coin cell vertical Panasonic CR-2450/VAN battery, https://industrial.panasonic.com/cdbs/www-data/pdf2/AAA4000/AAA4000D492.PDF battery CR-2450 coin cell retainer Keystone 3034 SMD battery holder Keystone type 106 battery holder with leaf spring, Keystone, https://ken.keyeuro.eu/cat/590.pdf AA battery holder Keystone 2xAAA cell battery holder, http://www.comf.com.tw/ProductDetail.asp?no=148 Keystone type 1058 coin cell vertical Panasonic CR-3032/VCN battery, https://industrial.panasonic.com/cdbs/www-data/pdf2/AAA4000/AAA4000D508.PDF battery CR-3032 coin cell vertical battery CR-2025 coin.
- CAST package, see https://www.vishay.com/docs/82742/tsop331.pdf.
- Pins, https://www.neutrik.com/en/product/nmj4hfd2 M Series, 6.35mm (1/4in) stereo jack.