Genuine LiftMaster 050DCRJWFMC receiver logic board (printed 050DCRJWF) — the Security+ 2.0 DC Wi-Fi board for the 8500W wall-mount (jackshaft) opener and the Chamberlain RJO70. The Wi-Fi radio on these openers sits on the logic board, which is why the 8500W does not share a board with the plain 8500: the 8500 and 8500C take the 041DJ002MC.
Read the number on the board. 8500W / RJO70 = this board (yellow learn button, Wi-Fi). 8500 / 8500C / RJO20 = 041DJ002MC (yellow, no Wi-Fi). 3800 / RJO = 041DJ001B (purple). The current 98022 and 98032 use the 041DJ003MC and 050DCRJB3MC.
Specifications
| Part number | 050DCRJWFMC (printed 050DCRJWF) |
|---|---|
| LiftMaster description | Receiver Logic Board, DC, Wi-Fi, RJO — manufactured after 2018 |
| Learn button | Yellow — Security+ 2.0, tri-band 310 / 315 / 390 MHz |
| Connectivity | Wi-Fi, myQ |
| Fits | LiftMaster 8500W, 8500WMC; Chamberlain RJO70 |
| Condition | Genuine LiftMaster OEM, new |
Which wall-mount board do I have?
| Opener | Learn button | Board |
|---|---|---|
| LiftMaster 8500W; Chamberlain RJO70 (Wi-Fi) | Yellow | 050DCRJWFMC — this board |
| LiftMaster 8500, 8500C; Chamberlain RJO20 | Yellow | 041DJ002MC |
| LiftMaster 3800; Chamberlain RJO; 3900PLD | Purple | 041DJ001B |
| LiftMaster 98022; Chamberlain RJO101 | Yellow | 041DJ003MC |
| LiftMaster 98032 | Yellow | 050DCRJB3MC |
A beeping wall mount is usually not the board. Check the door cables and the 041A6104 cable tension monitor, and whether the power door lock is engaged, before ordering.
Parts often replaced with it
485LM backup battery · 041B8861 travel module · 041C0168 transformer · 041A6104 cable tension monitor · 041A6102 power door lock · 893LM remote
Is the board actually the problem?
The logic board is the most over-ordered part on a commercial operator. Work down this list before you buy:
| Symptom | Check first |
|---|---|
| Opener beeps and will not run | Slack cable at the tension monitor, or the door lock engaged |
| Dead, no lights | Supply and transformer, then the board |
| Runs on AC but not on battery | The 485LM battery |
| Lost Wi-Fi / myQ | Router and app setup, not the board |
| Dead after a storm | The board — fit surge protection with it |
After fitting
Set the travel limits, learn the remotes, re-add the opener in the myQ app and re-test the cable tension monitor and the power door lock.
Fit surge protection when you fit the board. Lightning and utility surges are the most common reason a commercial operator board is replaced, and a new board on the same unprotected supply is at the same risk. The MOV kit on the electrical box is the first line; a proper surge arrester on the supply is the second.
Related
8500 / 8500W parts · RJO70 parts · 3800 parts · logic board cross reference
Not sure which board you need? Send a photo of the number printed on your existing board to parts@gatehousesupplies.com or call 866-965-5599. We would rather confirm it than have you fit the wrong board.
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