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Rugged Performance in a Compact Design

The MK (Metal Keypad) Controllers give operators of heavy equipment the best of both worlds: a small, hand-held, push-button controller with a tough, metal housing. Like all Laird Technologies products the MK controllers are built to excel in heavy duty industrial environments. They are rugged, lightweight units that are ergonomically designed and available for use with any of the current Laird Technologies Portable Radio Remote Control Systems. The MK controllers are designed to provide message security, long battery life, quick response time, and safe, accurate control of overhead cranes and other industrial equipment. Designed for harsh enviromnets, the MK controller is made of extruded aluminum with a hard, anodized exterior with the endcaps are fitted with high-impact resistant rubber for added durability.

Contact Laird Technologies today for your complete application solutions. 

Key Features

  • For use with most CattronControl Systems
  • Can be used to upgrade existing single- and dual-pressure keypad controllers
  • Color-coded "i-Key" adds security and eliminates need for specific spare controllers
  • Extremely durable housing made of extruded aluminum ergonomically designed with curved housing and rubber grips for comfortable handling
  • No need for additional carrying cases or protective housings
  • Separate watertight power ON/OFF switch and pull-on/ push-off STOP switch protected by rubberized end-cap "bumpers"
  • Sealed elastomer keypad with large, epoxy-coated push-buttons for single- and/or dual-pressure operation
  • Combined switch board and encoder board eliminate interconnect wiring and therefore increase controller reliability
  • Dual pressure models especially suited for VFD operation


Case Material Extreme duty NEMA 4, IP66 watertight aluminum housing
Approx. Weight 1.4 lbs. / 640 grams (including battery pack)
Dimensions 6.4" x 3.0" x 2.0", plus 1.0" protective top and 0.5" protective end caps (approx. 16.3 cm x 7.6 cm x 5.1 cm, plus 2.5 cm protective top and 1.3 cm protective end caps)
Operating Temperature -22ºF to +140ºF (-30ºC to +60ºC); Consult factory for temperature requirements beyond those listed.
Maximum Functions Single-Pressure MK Models: 4, 8, 12 (simultaneous, any combination); Dual-Pressure MK Models: 6, 12, 16 (simultaneous, any combination); auxiliary functions can be added for either model, i.e., crane select, hoist select, address select, etc.
Switch Options 4, 8, or 12 push-buttons; single- or dual-pressure
Switch Type Sealed silicon elastomer keypad, dust, water, oil, acid resistant with ‘tactile feel’, clear epoxy coated push buttons
Battery Life (continuous operation) 3 Volt alkaline battery pack or rechargeable Ni-Cad Battery pack. In U.S., Canada and non EC Countries, battery life is: Ni-Cad pack - 65 hours, Alkaline pack - 150 hours. In EC Countries, battery life is: Ni-Cad pack - 40 hours, Alkaline pack - 95 hours.
Transmit Indicator Green LED flashes with every transmission
Low-Battery Indication Yellow LED flashes for low battery; low battery alert signal beeps every 10 seconds
Battery Charging Internal or External Ni-Cad (External Ni-Cad availability pending). 10 hour charger standard, 1 hour charger optional.
Audio Speaker For "key click," diagnostics and low battery indication
Antenna Internal
Transmitter Frequency 425 - 447 MHz (M); 447 - 473 MHz (H)
Approvals U.S. FCC, Industry Canada Part 15, non-licensed approvals; European approvals pending.
Modulation FM, digital
Operating Range 500+ ft. nominal (150+ m)
Labels Sheet of self-adhesive Mylar, reverse-printed labels supplied. Optional reverse engraved custom faceplate available.
Carrying Straps Belt loop strap standard; shoulder strap optional

Specifications are subject to change without notice. Check with the factory for confirmation. 

Machine Control Units

MP96 MP96 Thumb 

  • Outputs: 1-96 independent and/or simultaneous, plus Mainline On/Off
  • Enclosure: NEMA 12 (IP65) standard dust, oil & water tight; NEMA 4 and 4X (IP66) optional
  • Receiver Frequency: (Crystal & Synthesized): UHF/VHF
  • Microcomputer Speed: 12 MHz
  • Memory Size: Two E Proms each with 64K bytes memory
  • Datalog Memory Size: 64K bytes
  • Optional Diagnostic Port: RS232C (DB25 Connector) or RS422 (MIA Connector)



AT AT_AT-S_Thumb 

  • 1-32 relay outputs + ON/OFF (mainline)
  • Extensive self-diagnostics
  • Automatic safety override (ASO)
  • Multiple "watch dog" timers
  • EMI/RFI shielded/compartmentalized sub-chassis
  • Plug-in micro-controller with e-prom allows quick "personality" changes
  • FCC/DOC/EC non-licensed and licensed systems available