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• Note: Please select the correct heating element according to your actual needs. Notice: 1. The sensor is divided into positive and negative wires. Pay attention to the wiring. If it is connected reversely, it will be heated all the time, causing the heating core to burn out. Differentiation: The negative wire can be absorbed by the magnet. (Do not connect the heating wire and sensor incorrectly, or the host will be burnt) 2. Generally, the handle that has been replaced with the heating core should be recalibrated, otherwise the temperature will have a large error. 3. The heating core must be wrapped with mica paper, otherwise it may cause electric shock. 4. In order to protect your handle, please adjust the temperature to the minimum when installing the heating core for testing. Generally, the constant temperature can be reached in a few seconds. If the temperature is not constant, you must turn off the power immediately, otherwise the handle will melt due to excessive temperature. 850 heating element (4 wire) 2 generation 1) 500W spiral heating core externally connected to 220V 2) Applicable models: AT-850D, AT-850b, AT-850B，AT-8502b and other hot air disassembling welding machines 850 heating element (4 wire) 3 generation 1) High power ceramic core, spiral heating wire 2) Applicable to: 850D, 852/860D, 852D, 952D and other hot air desolders 850 heating element (2 wire) 1) Spiral heating core 2) Applicable to: some domestic non digital display 850 on the market，Hot air gun desoldering station such as 952A 850 heating element (4 wire) AA 1) The difference is that the connector terminals are all male (pointed) 2) Applicable to: Gaodi series products 850B, 952，952C, 952B, and other hot air gun desoldering stations 850 heating element (4 wire)AB 1) The difference is that the connector terminal is a male and a female (pointed+round) 2) Applicable to: Gaodi series products 850B, 952，952C, 952B, and other hot air gun desoldering stations 850 heating element (4-wire with temperature control) 1) Air pump type 2) Applicable to: 850B, 850 air pump, 950 950+, 850D+, 852d, 852d+ 850 heating element (2-wire with temperature control) 1) Butterfly wire heating element 2) Applicable to: some domestic non digital 850/952A hot air gun desoldering stations on the market Q990Aheating element (2-wire) 1) QUICK 2-wire butterfly wire heating element 2) Applicable to: Quick 850A+, 850AD, 850D, 990AD，990D and other models of hot air desoldering station 857DW+heating element (4-wire) 1) Wire wound heating element 2) Applicable to: 857, 857A, 857D, 857DW, 706W, 957DW+and other hot air desolders Framework ceramic heating core(4-wire) 1) 700W spiral heating element, externally connected to 220V 2) Applicable to: 858, 858D, 878, 8586, 898D, 852D+, 909D, 9305D, 8858, 8878 and other brushless air machine handle welding stations Q868D heating core 1) New honeycomb structure design, more uniform air outlet heating 2) Applicable to: 2008/858D, 858/750/868D and other models of hot air desoldering station Notice After receiving the Goods, please record the unpacking video as proof of after-sales service. If the soldering station cannot be used normally, please send me the unpacking video and we will give you the solution. If the package is damaged and the product cannot be used normally, please contact us and we will try our best to help you get the full payment. Please do not bring up disputes at will, because we have enough time to solve the problem. Subscribe to the store to get additional coupons.

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