Linear MCS307010 1-Channel Key Ring Transmitter – 300 MHz, 12V Battery, 1,024 Codes

Overview

The Linear MCS307010 is a compact, one-channel key ring transmitter designed for automatic door and gate operator applications. Its palm-sized housing conceals a reliable 12-volt battery and straightforward coding switches, so you can customize access for compatible receivers. A red test/operate indicator gives quick status feedback during setup and operation, helping you verify that the signal is being sent when you press the button.

How it works

Operating at 300 MHz, this transmitter uses a multi-code format with a 10-position coding switch. With 1,024 possible codes, it activates only receivers that share the same code, reducing unintended activations and offering flexible access control for shared entry points.

Key features

• Compatible with 300 MHz multi-code receivers
• Easy access to battery and coding switches
• Power: 12-volt battery
• Codes: 1,024 (set by dip switches)
• Rf frequency: 300 MHz

Design and durability

The device includes a molded-in hole for attaching to a key ring, making it a practical everyday carry item. The miniature form factor supports discreet storage in a pocket or bag while remaining readily accessible when you need to grant access.

Real-world use cases

• Gate access: carry this transmitter on your key ring for quick entry where a receiver is installed.
• Automated doors: share authorized access with family or staff without fumbling for remotes.
• Custom installations: pair with Linear receivers to fit your existing control network.

What to consider when purchasing

Ensure your receiver is in the same code family and configured to match the 1,024-code setting. The 12-volt battery is replaceable, helping minimize downtime, and the red indicator provides visual confirmation of transmission status during daily use.