Linear DNR00104 / MGR 318MHz 12/24V MegaCode 1-Channel Wireless Gate Receiver
The Linear DNR00104 MGR is a one-channel 318 MHz MegaCode gate receiver used to add or restore radio control on compatible automatic gate operator systems. A one-channel receiver is typically wired to a cycle, open, or trigger input depending on the operator and the desired function. It is a practical replacement when the original receiver has failed, when a system is being converted to MegaCode transmitters, or when a remote receiver is needed outside a metal operator cabinet for better signal reception.
The key fitment issue is radio format. DNR00104 is a MegaCode receiver, not a 10 dip-switch Multi-Code receiver. It should be paired with compatible Linear MegaCode transmitters and accessories. If the customer has older 300 MHz Multi-Code remotes, the MGR is usually not the right receiver unless the remotes are also being changed.
Compatible With
Compatible Radio Family
- Linear MegaCode 318 MHz transmitters and access controls
- MegaCode remote systems requiring a one-channel receiver
- Automatic gate operators with compatible low-voltage radio input terminals
Common Applications
- Gate operator cycle/open input receiver
- Remote receiver installation where an antenna is needed outside a metal cabinet
- Replacement for failed MGR / DNR00104 receiver
- Access control systems using Linear MegaCode format
Not Compatible With Without Conversion
- 300 MHz Multi-Code 10 dip-switch transmitters
- MCS109920 / 1099 style dip-switch receiver systems
- Non-MegaCode fixed-code transmitters unless a compatible receiver/transmitter conversion is planned
Features & Specifications
| Manufacturer | Linear |
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| Product Type | 1-channel gate radio receiver |
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| Part Number | DNR00104 |
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| Model | MGR |
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| Frequency | 318 MHz |
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| Security Technology | MegaCode |
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| Voltage | 12-24 VAC/VDC, verify receiver instructions |
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| Capacity | Up to 40 transmitters |
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| Application | Automatic gate operators and remote receiver applications |
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Also Known As / Related Part Numbers
- DNR00104
- MGR
- Linear MGR
- Linear DNR00104
- MegaCode gate receiver
- 318 MHz MegaCode receiver
- 1-channel MegaCode receiver
- DNR00104 MGR receiver
Technician Note
Match receiver technology to the transmitters already in use. MegaCode and 300 MHz 10-dip Multi-Code products are different radio families and should not be mixed unless the system is being intentionally converted.
Before Ordering
- Confirm the remotes are Linear MegaCode 318 MHz transmitters.
- Confirm the operator has compatible low-voltage receiver power and trigger terminals.
- Check whether a one-channel receiver is enough or if a two-channel receiver is needed.
- Mount the receiver/antenna where the signal is not blocked by a metal enclosure.
- Program and test every transmitter after installation.
Professional Advisory
Receiver wiring is normally low voltage, but it still affects gate movement. Do not bypass safety inputs or wire a receiver in a way that defeats operator safety features.
Product Q&A
What transmitters work with DNR00104?
DNR00104 is for Linear MegaCode 318 MHz transmitter systems. Match the transmitter model to the MegaCode receiver family.
Is this the same as a 300 MHz Multi-Code receiver?
No. DNR00104/MGR is MegaCode 318 MHz. Multi-Code 300 MHz dip-switch receivers and remotes are a different system.
How many transmitters can be programmed?
The MGR is commonly listed with capacity for up to 40 transmitters.
Can this be used on a gate operator from another brand?
It may be used with many gate operators that provide compatible low-voltage receiver power and trigger terminals, but wiring must be verified by the operator manual.
Why use a remote receiver instead of the built-in receiver?
A remote receiver can improve serviceability or reception, especially when the operator cabinet blocks radio signal.
