[Compatible] The -711 control board is used in 2-way, 3-way, , , adjustable-temperature, and fixed-temp. Compatible with refrigerators following models: S1521, S1531, S1621, S1631, S1821, S1831; RM2554, RM2607, RM2611, RM2612, RM2620, RM2652, RM2807, RM2811, RM2812, RM2820, RM2825, RM3607, RM3662, RM3663, RM3807, RM3862, RM3863, RM4872, RM4873, RM7030, RM7732, RM7832; NDR1062, NDR1272, NDR1282, NDR1492 [Comprehensive Model Compatibility] The -711 control board is compatible with series refrigerators, including: S1521, S1531, S1621, etc., and NDR1062, NDR1272, etc. Compatible with , , adjustable temperature, and fixed temperature systems, suitable for 2-way or 3-way RV refrigerators. [Detailed explanation of replacement models] This miniature P-711 control board can replace all black box board part numbers starting with "293", including but not limited to 2931842 series and 2932695.01, providing a comprehensive replacement solution. The components of the system's first release can be completely replaced, covering a wide range of applications. [Part Number Level Functions]-711 control board has all the functions of Part Number control board and adds temperature adjustment function. Users can adjust the equipment according to their own needs to the refrigeration or freezing effect. [Safety and Upgrade]The control board has upgraded thermocouple circuit to solve the ground bounce problem. Fuse protection for the 120VAC circuit, 12VDC power supply and has been added to electrical safety and stability during use. [Convenient installation process] The moisture-proof treatment and bracket construction process the durability and long-term service life of the product, making the installation process simple and convenient. Colour:Green Material:Metal+Plastic Package Contents: 1 x Refrigerator Main Power Circuit Board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.