433.92MHz Grey Back Only: Make sure your original remote works at 433.92MHz and has a grey back. NOT compatible with Digital 868MHz with black back. NOT compatible with Bi-Linked series. Compatibility List: This is a replacement for 433.92MHz Multi-Bit remote controls. Compatible with Digital 302/ 304/ 306/ 313/ 317/ 318/ 321/ 323/ 382/ 384/ 392/ 394 433MHz. Compatible with 131 /132 / 222 / 231 433MHz List of compatible garage door opener receivers: Our remote control only works with garage door opener receivers that operate at a frequency of 433.92MHz Multi-bit. Compatible with Comfort 50 /51 / 60/ 211 /220 /220.2 /250 /250.2 /252 /252.2 /500 /510 /520 /580 /800 /820 /830 /850 /851 /870 Warm Tips: This garage door remote control is a replacement and not an original accessory. We recommend that you check the compatibility of the devices using the list below before purchasing Material: Plastic Color: Package Contents: 2 x Remote controller 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. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!