Remote controls have very short range or only work when very close to the Sommer opener.

Safety: Disconnect power before opening the housing to access the antenna.

• 1. Replace remote battery: Install a fresh coin cell or AAA battery as specified for your Sommer remote.
• 2. Check antenna: Locate the thin antenna wire on the opener and ensure it hangs straight down and is not wrapped around metal or power cables.
• 3. Reduce interference: Replace nearby LED or CFL bulbs with garage‑door‑rated bulbs. Move Wi‑Fi routers or other RF devices away from the opener if possible.
• 4. Verify remote model: Confirm the remote frequency matches your Sommer opener series. Replace with a correct Sommer‑branded remote if needed.