{"product_id":"precision-detection-kit-rt01-automotive-relay-tester-paired-with-bt138-battery-tester-universal-judgment-and-maintenance-tool","title":"RT01 Relay Tester or BT138 Battery Tester, Kit Options","description":"\u003cp\u003eChoose the tester that matches the check you need to make: RT01 for compatible automotive relays, BT138 for supported batteries, or the combined package for both tasks.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e✅ \u003cstrong\u003eKeep the two checks distinct\u003c\/strong\u003e - the RT01 and BT138 perform different testing roles.\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eChoose a single tool or a kit\u003c\/strong\u003e - buy only the selected tester or both together.\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eRead the indicated result\u003c\/strong\u003e - the RT01 uses status lights, while the BT138 provides a battery reading.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSelect the Tester by the Component Being Checked\u003c\/h2\u003e\u003cp\u003eThe RT01 is listed for suitable four- or five-pin automotive relays with coil resistance of at least 20 ohms. It requires an appropriate external vehicle-battery supply; it is not a self-powered tool that needs no connection.\u003c\/p\u003e\u003cp\u003eThe BT138 is a separate battery tester. Check its actual supported voltage and chemistry before use, and do not treat a voltage reading as a full capacity or health test. The selected package contains only the named tester or testers; batteries are not included.\u003c\/p\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S2fb5995641e84656ba82eb5f23dbaa97o.png\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S829aca0162cf4951a8f9507bda567eaeh.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S1faa84d9ba324ed8a5d7f0398c3f428f4.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sc77ea9195aad4e4096dfc7316a889987E.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sf8574069b2194412b9d7cea1fe4f9972e.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sbbfaf597ed7b4f61a3a9aa40ead17550c.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S70b9e6f9cc944ca59fb9aed116bd4926h.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S40f7ccea3e514785b0ac308f489f969fs.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S49e875a86bdd4c1a91b02535f3bbd695x.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S79855d51216c4d70888e8ea178973256k.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S8d46bdd8990b4ee19ee3eb12b4ad17bbx.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S3f02d151f6f14026a99731efaac4608bu.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sb2628256744b4d2abc22afbef777447d8.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sd67087ffa36845f58046fccaef41ee21d.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S696f29c2b3714cccb0a08b65202ad007H.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S94dd6a31c0014f6eb5e24495588e0a25M.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sf4b89c5972a342699c623f9180506800S.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S13651b8e29184b258d5bb5e03c9a73e47.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S1dc859401b95468fa4ed1b471449a9c4Q.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sdac087ecab52417aa7955e5880e54bcfQ.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S76f9e0230a0e4d03bc836c4f3e3a2ff95.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S0bd16e70b9ef41cfb58e5f5e8076366aJ.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S7aa8d9caa6c74e2f9bd926a290ae568f2.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sc06d6ecc3de14494b7ba6c824ab68e8eL.jpg\" slate-data-type=\"image\"\u003e\u003ch3\u003eTechnical details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOptions: RT01, BT138 or RT01 + BT138.\u003c\/li\u003e\n\u003cli\u003eRT01 supply listed: 11-25 V external battery.\u003c\/li\u003e\n\u003cli\u003eRT01 relay formats: compatible four- and five-pin types.\u003c\/li\u003e\n\u003cli\u003eRT01 minimum coil resistance listed: 20 ohms.\u003c\/li\u003e\n\u003cli\u003eBT138: supported batteries only; verify unit markings.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eChoose the tester or kit that matches your next electrical check.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Spy-shop.com","offers":[{"title":"RT01-BT138","offer_id":64096185024842,"sku":"1005011845670924-RT01-BT138","price":69.48,"currency_code":"EUR","in_stock":true},{"title":"BT138","offer_id":64096185057610,"sku":"1005011845670924-BT138","price":32.35,"currency_code":"EUR","in_stock":true},{"title":"RT01","offer_id":64096185090378,"sku":"1005011845670924-RT01","price":56.84,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0764\/5980\/2954\/files\/S3c217a448f1f47fba23ec1bc35673eeaL.webp?v=1792964449","url":"https:\/\/spy-shop.com\/sk\/products\/precision-detection-kit-rt01-automotive-relay-tester-paired-with-bt138-battery-tester-universal-judgment-and-maintenance-tool","provider":"Spy-shop.com","version":"1.0","type":"link"}