Linear ACT-31B / ACT-34B keychain garage door remote

Linear

ACT-31B & ACT-34B Keychain Remote

318 MHz MegaCode keychain transmitter family — available as single-button (ACT-31B) or four-button (ACT-34B). Used by gated communities and commercial properties on Linear MegaCode infrastructure. Each fob carries a unique MegaCode ID, so individual fobs can be revoked at the receiver without re-coding the rest of the fleet.

$20.95–$23.95 Minimum order quantity: 10 ● In stock — bulk fulfillment, ships in 2 business days
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🛟 Free technical support 📄 Programming & FAQ
  • ModelLinear ACT-31B / ACT-34B
  • Frequency318 MHz · MegaCode unique-ID encoding
  • CompatibilityLinear MegaCode receivers
  • Battery3 V CR2032 lithium
  • FCC IDEF4ACT31B / EF4ACT34B
  • Min order10 fobs

In the box

  • 10× Linear ACT keychain transmitters (specify -31B or -34B mix)
  • 10× steel split-ring keyrings
  • Pre-installed batteries
  • Pre-printed MegaCode ID labels (for property-manager records)

Compatibility

Confirmed-compatible openers, receivers, and the older remotes this part replaces. If your model isn't listed, send us a photo and we'll verify before you buy.

MegaCode receivers

AM-RR AM-RRA AP-3 AP-5 EX-2000 AE-100 AE-500 MGT MGR

Linear gate operators

LSO50 LCO75 PRO50 LRRA-1 LSGSWY

Replaces these remotes

Linear MCT-3 (visor) Multi-Code 4140 4120 (functional equivalent on MegaCode receivers)

MegaCode fobs carry a unique factory ID — each one can be enrolled and revoked individually at the receiver without affecting other active fobs. This is the key advantage over DIP-switch fobs for properties with frequent move-in/move-out turnover.

Enrolling the ACT-31B / ACT-34B

MegaCode receivers learn each fob's unique factory ID — a one-time enrollment per fob (or per button on the ACT-34B).

  1. At the MegaCode receiver, press and release the "PROGRAM" button. The LED blinks slowly.
  2. Press the desired button on the ACT-31B or ACT-34B. The LED blinks fast, confirming enrollment.
  3. Repeat for each fob (or each button on the ACT-34B) you want active. The receiver stores up to 480 unique IDs.

To revoke a single fob: at the receiver, enter the fob's slot number and press DELETE. The other 479 active fobs remain unaffected.

What customers say

★★★★★

The MegaCode revocation feature is why we standardized on Linear. When a resident moves out, we delete one ID — done.

Property Manager · Boca Raton, FL

★★★★★

ACT-34B with four buttons covers our front gate, parking, amenity, and a service entrance — single fob per resident.

HOA Board Member · Las Vegas, NV