72M with 36S Slats - $929.99

The COBRA 72M is a compact and rugged 72-cue firing module that functions universally with the 18R and 18R2 hand-held remotes.

Each firing module has four independent banks (A, B, C, & D) that can be set to one of 100 unique channels by pressing the + and - buttons on the module. For example, bank A can be set to channel 1, bank B can be set to channel 2, bank C can be set to channel 3, and bank D can be set to channel 4. Each bank connects to the included 18S Slat, or 18S Mini Slat using an onboard DB25 connector for each individual bank. Using the 18R or 18R2 hand-held remote channel controls, you can fire any banks on the same channel. You can fire unlimited modules at the exact same time by setting them to the same channel.

The 72M also boasts a backlit LCD screen, standard built-in rechargeable LiPo battery, support for replaceable 9V batteries, and support for 12-24V external power.

Using Pro-Adapt Plate technology, the 72M offers a truly connection agnostic design. The 72M simply plugs securely into the 2 x 36S Pro-Adapt Plate. The same 72M can be used with any of the COBRA Pro-Adapt Plates.

This version comes with two 1M (3.25ft.) Centronic 50 Heavy Duty Slat Cables and two of your choice of series or parallel 36S Mini Slats. For more information on slats, please watch our Slats video.

Tech Specs
What's Included
Documentation / Videos
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The 72M comes with four banks (A, B, C, & D) that can be channeled independently of each other. Simply press CH+ or CH- on the 72M to set a bank to a channel between 00 and 99. Press the 'Change Bank' button to toggle between banks and use the CH+ or CH- change the channel for the selected bank. Banks can be set to any channel in any order. For example, bank A can be set to channel 2, bank B can be set to channel 3, bank C can be set to channel 4, and bank D can be set to channel 5. Then, by changing the channel on the 18R or 18R2 hand-held remote, you can fire any bank set to the same channel.

Power Conservation

The 72M comes standard with a rechargeable 14.8v, 900mAh battery. It can also support the use of three 9V (PP3) batteries. One of the 9V batteries is used exclusively to power the system operations, while the other two are used for firing cues.

The 72M also has a power conserving sleep mode. When powering off the 18R or 18R2 remote, the 72M will automatically fall asleep and conserve power for up to 30 hours. This allows you to place and arm your modules into position hours before the show begins. Then, when turning on your 18R or 18R2 remote, the module wakes up and is ready to fire.


At COBRA, we believe safety and reliability are the most important features of any firing system. With that in mind, every COBRA system incorporates the below collection of technological and usability based features. This ensures safe and reliable functionality every time you use the system.

  • IEEE® Unique Network MAC Addresses - Every COBRA remote contains a fully unique network MAC address. This address is programmed into the unit at the time of production and contains 16 x 0-F base-16 values. For example, 00.1C.2C.00.00.C0.00.01.

    By syncing a firing module to a remote, the remote's network MAC address is saved and remembered on the firing module, even after power-on and power-off. Once saved, the firing module will ONLY respond to the remote containing this unique MAC address. This prevents any other remotes from firing your system. In addition, any time a firing module is synced to a different remote, the previous MAC address is overwritten, thereby ensuring the firing module only responds to the last remote to which it was synced.

  • 2.4GHz transceiver modules - The COBRA 72M uses a 2.4GHz transceiver module manufactured by Synapse, a US company that both develops and manufactures its SNAP line of IEEE 802.15.4 radio modules and transceiver ICs.

    The same transceiver and software development platform is used successfully not only by COBRA, but also in a variety of safety-critical industrial wireless applications, including medical monitoring systems and airport lighting controls.

  • Redundant, solid-state, self-testing MOSFETs - The COBRA 72M uses redundant solid-state firing FETs on both the high and low side of each firing cue. This ensures that no power is supplied to the cue unless the firing module is both armed, in fire mode and is actively firing a cue. The redundant FETs provide protection against unintentional electro-static discharge (ESD) and serve to automatically test for damaged or shorted FETs upon system start-up. If detected, the system will automatically disable itself and will not operate.

  • NFPA compliant user-design - The COBRA system adheres to National Fire Protection Association (NFPA) chapter 9.2 requirements including a key-operated switch, multiple actions to arm and fire, and minimum current requirements when performing continuity tests.

  • Contains FCC, CE and IC certified RF Module - The 72M contains the Synpase 802.15.4 2.4GHz RF transceiver module.


The 72M is enclosed in 2.5mm thick high-strength ABS plastic and shielded by a highly thermal and impact resistant black armored plating on the top side. The clear design minimizes all entry of air, moisture, and dust into the electronic housing by eliminating the need for cut-outs and micro-gaps in the enclosure. Polyurethane-coated fire-retardant silicon keypads have custom walls that push up against the top-enclosure to protect against moisture and dust.

Power Options

  • Easy to Charge - A charge port and charge indicator exists on the top of the module for simple charging. If you use armored cases, the faceplate supports charging while the 72M is still in the armored case. Use our Single LiPo charger, charge up to five modules at once with our 5 Module LiPo Charger option, or ten with our 10 Module LiPo Charger

  • External 12-24V DC Input - Rugged external binding posts support external 12 and 24V DC input. For permanent installations, we offer a custom 110/220V A/C to 24V D/C converter. Use the internal LiPo battery pack together with the A/C input to act as a real-time power backup.

  • Increased Amperage - Replaceable 9V batteries produce a peak current of 3 Amps. Using the LiPo battery pack, this increases to 6 Amps. Using the external power input, we can produce up to 9 Amps of peak current. This will support firing up to 8 and 12 e-match / talons respectively, in addition to also supporting the firing of high current devices such as confetti cannons, flame projectors, and cryo jets.

  • Cold Weather Performance - Fire extreme cold shows with confidence with improved cold weather performance down to -20F / -29C.

  • Dual Protection Circuits for LiPo Safety - COBRA incorporates dual overcharge, undercharge, and overvoltage protection circuits. The first protection circuit is built into the 72M motherboard. The second protection circuit is built into the battery itself. This means if one of the protection circuits fails, the other acts as a backup. While we don't expect any failures, feel confident that we have designed both the battery and charge circuitry with the highest level of safety and protection in mind.

Physical Construction
Dimensions  8.24” x 6.47” x 2.57” (20.92cm x 16.43cm x 6.5cm)
Keypad Backlit fire-retardant silicone
Enclosure Material Impact resistant and fire-retardant ABS
Power Options
Type Active Sleep
3 x 9V 8 hrs. 20 hrs.
14.8V LiPo 18 hrs. 36 hrs.
12-24V External Input No Limit No Limit
Antenna +5 dBm 8.5" Unidirectional Rubber Duck Antenna
Radio Compliance FCC CE, IC certified (ID: U90-SM220)
Frequency 2.4 GHz Spread Spectrum
Range 500m (1,650 ft) direct line of sight range w/ built-in link quality detection
Range with MESH Technology (5.0.0 or higher firmware) +450m (1,500 ft) per device (up to a total of 10 hops per device)
Encryption IEEE Mac Address / Encrypted Data
Cues / Firing
Number of Channels 100
Number of Cues 72
Firing Accuracy 1/100th second
Max # of Unique Cues 72
Onboard Connectors None
Slats supported 18S Mini Series & 18S Mini Parallel
18S Series & 18S Parallel

The 72M has three different power options including 9V replaceable batteries, an internal 14.8V rechargeable LiPo battery pack, and the option for external 12-24V power input. You can view the maximum amount of e-match or talons you can fire based on your specific configuration below.

Max Firing
Series (e-match only) Parallel (e-match or talons)
9V 10 4
14.8V LiPo 10 8
12V External* 8 12
18.5V External* 14 12
24V External* 20 12

*assumes minimum 15A peak burst current

Your purchase will include the below:

Please find a listing of potential error codes displayed on the 72M during the boot-up process. For each code, we have provided the cause, and steps to resolve.

Error 1: Low Driver - Low Battery Detected

Cause #1: The 72M battery levels are too low.
How to Resolve?
  • Charge the 72M battery to remove this error message.
  • If using 9V batteries, check the battery orientation to confirm it's not reversed. Also confirm the voltage mode is set to 9.0 explained below.

Cause #2: The 72M is set to the incorrect Voltage Mode.
How to Resolve?
  1. Press and hold the 'Test' Button.
  2. While holding down 'Test', press the 'CH+' or 'CH-' at the same time to toggle the mode.
  3. Re-start the 72M. The error code should no longer display.

Error 2: Test Driver - Faulty Cue

Cause: The 72M has detected a faulty cue.
How to Resolve?

Error 3: Stuck Keypad

Cause: A button is pressed while the module was powering on.
How to Resolve?
  • Make sure that no buttons are being pressed or may be stuck during the boot-up process. Then, re-start the 72M.

Error 5: Protocol Ver - Firmware Does Not Match Remote

Cause: The firmware of the 72M does not match the firmware of the remote that it has been synced to.
How to Resolve?
  • The 72M firmware must match the 18R or 18R2 firmware to which it's synced. When powering on the 18R, 18R2 or 72M, the firmware is the first piece of information displayed. For example, 5.0.2. It is critical that the 18R or 18R2 has the same firmware version as the 72M. See Firmware Updates for more information / instruction on how to reprogram your units.

Error 6: Protocol Ver - Incomplete Upgrade

Cause: The 72M was not completely upgraded properly.
How to Resolve?
  • The 72M has two different firmware files. The first is a .spy file that is loaded to the transceiver using the Synpase Portal software. The second is a 90M.s19 file loaded to the processor using the USB drive on the device. When first loading the .spy file using Portal, this error code will always display. This is normal. Please proceed to the next step and load the 90M.s19 file per the instructions. Once this file is loaded, the error code should disappear after re-starting. For more information, please see Firmware Updates on how to reprogram your units. You can also email us at ssmith@cobrafiringsystems.com for further assistance.

Error 7: No RF Com - Transceiver Issue

Cause: The 72M has detected an issue with the transceiver, which likely needs to be replaced.
How to Resolve
  • Please contact us if you see this error message.
Please find a listing of Frequently Asked Questions (FAQ) for the 72M.

What is a bank and how does the 72M function with the 18R and 18R2?

To remain compatible with the 18R and 18R2, the 72M has been divided up into four sets of 18 cues. These sets are referred to as bank A, bank B, bank C, and bank D. There is a CHANGE BANK button on the 72M. You can press this button to toggle between banks. For each bank, you can press and hold the CH+ or CH- buttons to change the bank for that channel. For example, you can set bank A to channel 1, bank B to channel 2, bank C to channel 3, and bank D to channel 4. Banks can be set to any channel, and also the same channel to fire at the same time in parallel.

For testing continuity on the module, press the TEST button for the 1-18 cue LEDs to display green for the selected bank. For firing cues, you can simply fire cues for a selected channel. It is suggested to write the channel on a small piece of masking tape next to the bank on the module or slat to notify the operator which bank is set to which channel.

What is a Pro-Adapt Plate?

A Pro-Adapt Plate is a connector plate that is mounted on the 72M that allows for varying types of cue connection methods. Currently COBRA offers two 72M Pro-Adapt Plates. These include a large armored case with on-board cues, and a smaller armored cases offering side exit support for four 18S slats. In the future, COBRA will offer a wide variety of connection methods.

What type of battery options / battery life is supported?

Yes, the 72M is offered standard with our rechargeable 14.8V LiPo Battery. The 72M also supports the use of replaceable 9V batteries for backup in addition to 12-24V external power. The following lists the available power options and associated battery life in both active and sleep mode operation.

Type Active Sleep
3 x 9V 8 hrs. 20 hrs.
14.8V LiPo 18 hrs. 36 hrs.
12-24V External Input No Limit No Limit

How many e-match / Talons can the 72M fire when wiring in series or parallel?

This is dependent on the type of battery you are using. Please find the below chart for the maximum number of e-matches and Talons you can fire. Please note that Talons cannot be wired in series.

  Series (e-Match only) Parallel (Talons/e-Matches)
9V 12 4
14.8V LiPo 10 8
12V External Input* 8 12
18.5V External Input* 14 12
12V External Input* 20 12

*assumes minimum 15A peak burst current

What type of charger does the 72M use?

The 72M uses a 20V DC, 300mA barrel plug charger for the LiPo battery. We offer this charger in a single, 5 module, and 10 module configuration. This is the same charger used for the LiPo versions of the 18M, as well as all versions of the 36M and 72M.

Can I power the 72M using the charge port?

No, the 72M is not designed to be operated while plugged into the LiPo charger.

What is the USB port on the 72M used for?

At this time, the USB port is used for updating the firmware version. However, this port will support added functionality in the future.

What type of screen is used on the 72M?

The 72M uses a 128x64 pixel LCD screen. The advantage of this screen is to display the address, channel/bank information, voltage mode, battery levels and signal strength at the same time. This is an improvement over the 18M which displays some of this information during the boot up process, and not persistently to user at all times.

I already own 18S Slats, can these be used with the 72M?

Yes, all COBRA 18S slats and cables can be used with the 72M.

I already own an 18R/18R2 and 18Ms, can they be used with the 72M?

Yes, all existing Cobra equipment is compatible with the 72M. However, these units must all be running on firmware version 5.0.2 or higher. If you already own a COBRA system running an older firmware version and would like to use your equipment with the 72M, please see Feature Improvements / Firmware Updates.

Can my 18M be upgraded to a 72M?

Unfortunately not. The 72M is a completely new module platform and does not support a hardware update from the 18M.

Does the 72M use the same key as an 18M?

Yes, the 72M, 36M, and 18M use the same key and key switch.

Does the 72M use the same antenna as an 18R/18R2 and 18M?

Yes, the 72M and the 18M use the same omnidirectional antenna as the 18M.

What protective options are available for a 72M?

We currently offer small protective armored cases, with side exiting slat connecters for the 72M. For on-board cues, the 72M is offered in a large armored case, which also inlcudes support for 18S and 36S slats. We plan to add more protective options in the future.

Firmware Version UM:
Protective Option Type:
Slat Options 72M with 36S:
Cable Length:


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