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ct24 Mini

Proven transmitter unit with high quality joysticks and state-of-the-art dual-processor technology. Globally deployable for cranes, hoisting systems and machines.

  • High safety-class through redundant hardware and software architecture
  • Suited for applications requiring
  • EN ISO 13849-1 Performance Level d
  • Approvals and frequencies for worldwide deployment
  • Application-specific transmitter layout
  • Compatible with a number of receiver units, featuring various interface options
  • System configuration via easy accessible TransKey

The transmitter is supplied with a cushioned waist belt or as option with a user-friendly body harness.

For the most different kind of applications the transmitter ct24 MINI can be combined with various receivers: ct24, MMCU-4, CCM12.

Contact Laird Technologies today for your complete application solutions. 


  • Approvals and frequencies for most countries
  • Proven safety-concept for meeting all relevant norms and regulation
  • Customer-specific layout and selection of actuators available
  • Can be matched with different receiver sizes
  • Tandem and Dual-transmitter operation available
  • Durable plastic housing
  • High-quality joysticks and actuators for extended life-time
  • Extensive range of accessories and features


ct24 Mini Spare Parts 



Frequency ranges 402 - 470 MHz
869 MHz
915 MHz 
Transmission speed 4.8 to 20 kbits/s
Transmission power < 10 mW (within the allowable levels)
Receiver sensitivity -107 dBm
Antenna Internal




Commands up to 34 digital commands + STOP
Digital Circuitry Dual-processor technology
System addresses 24 bits = 16 million addresses
Energy Saving Mode automatic shutdown (configurable: 0–30 minutes)
Power supply Rechargeable battery, NiCd, 12 V / 1600 mAh
Battery life > 12 hours at 100% uninterrupted use




Protection class IP 65
Safety Standards EN 954-1 Category 3 for all safety functions
EN ISO 13849-2 Performance Level d



Physical Data 

Weight approx. 1.6 kg
Dimensions 215 x 136 x 147 mm (L x W X H)
Housing ABS Plastic, standard colour red/grey
Opertating Temperature -20° to +60°C



Operation and Indication 

(Standard layout, customer-specific layouts on request)

1 Joystick, 2 Motions, 2 Steps
1 Joystick, 1 Motion, 2 Steps
1 Rotary selector switch
2 Pushbutton (top)
1 Pushbutton (side)
1 Key switch (On/Off)
1 x Mushroom switch for stop command

TransKey System configuration, address and RF channel
Indication Status LED, top
4 Multi-LEDs, underside
Acoustic Indication low voltage indication




Re-chargeable Batteries 2 batteries, NiCd 12 V / 1600 mAh
Charger Processor-controlled charger incl. cradle

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

Machine Control Units

ct24 Receiver LRC CT24 

  • Ranges from 17 to 32 command relays + 2 safety relays
  • System parameter and configuration setting via RFID transponder key (TransKey™) 
  • Rugged, industrial design enclosure with IP65 protection class
  • Approvals and frequencies for worldwide deployment
  • Dim for 17 relay: 9.25” x 6.69” x 4.13” (235 x 170 x 105 mm)
  • Dim for 32 relay: 12.2” x 6.69” x 4.13” (310 x 170 x 105 mm)

ct24 Datasheet
ct24 6 Relays Datasheet 
ct24 Spare Parts


MMCU-4  mmcu-4 

  • Up to 4 I/O cards for digital, analogue or industrial fieldbus signals
  • Various interface options for feed-back data
  • Safety-relays for commands available
  • Rugged, industrial design in a metal enclosure
  • High safety-class through redundant hardware and software architecture
  • Approvals and frequencies for worldwide deployment
  • Application-specific solutions through hardware and software configuration
  • Compatible with several transmitter types and models

MMCU-4 Datasheet 
MMCU Spare Parts 



  • CANopen Communication Profile CiA DS 301 V4.02
  • High safety-class through dual node hardware and software architecture
  • Operates in many radio frequencies for worldwide deployment
  • With data feedback option back to the transmitter unit
  • Features 2 monitored safety relays
  • High-impact-resistant housing with protection class IP66
  • Compatible with several transmitter types and models

CCM12 Datasheet 


Batteries - Double Pack 

Batteries, Double-Pack
2 rechargeable NiCD-batteries (12 V / 0,6 Ah)

Power Battery 

Power Battery
Extremely high powered, rechargeable NiCd battery (12V - 1,6 Ah)

Standard Battery Charger  Standard Battery Charger
Battery-charger, 230 V AC
Battery Charger PLG  Battery-Charger PLG
Process controlled battery-charger with 230V AC input power
Waist Belt 

Waist Belt
Robust nylon cushioned belt with metallic waist clips for the transmitter

 Body Harness 

Body Harness
An ergonomic designed synthetic support harness with comfortable nylon straps.

Service Case  Service Case TC100 HANDY / MINI
The scratch and shock resistant synthetic case contains important components and spart parts necessary for service calls.


Stationary Transmitter
When the circumstances do not allow for the use of a portable transmitter, a stationary one can be implemented, e.g. if the operator can only operate from the control console in his crane or another vehicle, the stationary transmitter is of great use.

Data transmission from machine to machine or the interlocking system of a conveyor belt is another good example of further application areas.

Changing the RF-Channel
In order to ensure interference-free operation of a radio control system it may be necessary to change the RF-channel locally.

Changing the RF-channel can become necessary due to interference or the fact that a specific RF-channel is already in use. A change of channel can be performed either by reprogramming the TransKey or by reprogramming the transmitter. Reprogramming of the transmitter is performed using the transmitter keypad and requires no additional equipment.

Pitch and Catch
In the case of a pitch and catch operation, the crane can be controlled alternatively via two transmitters. One transmitter assumes responsibility for commands via an active request command. Only by an active release command is the crane given free and the other operator is able to have access to the crane again.

This option is the soloution when different operators at various locations in the area and have to transport loads across large distances.

Electronic Deadman Control
The electronic deadman control shall prevent an unintentional use of a joystick, which can cause unwanted movement of cranes or machines.

The operator has to release the joystick by putting it back to the neutral position before giving the ultimate command. Without this release the joystick will not react and no commands will be conveyed from transmitter to receiver.

After the release, the joystick remains active until it returns to the neutral position and remains there for set amount of time. The active/inactive status of the joystick is indicated by a LED on the transmitter.

This feature can be set for a drive, a joystick or even two joysticks.

Man-down Alert
As operation of a remote control always requires the operator to be in an upright position, the transmitter has a tilt sensor which monitors whether the transmitter and thus also the operator are in an upright position.

If the transmitter or the operator are no longer in an upright position, a warning signal will sound after a brief period; this warns that the transmitter is in a tilted position. Unless the transmitter is not returned to an upright position or a certain button is not pressed in order to extend the tilt period, the crane or machine is automatically brought to a standstill by a forced braking.

Infrared Start-up Feature
The infrared start-up feature for radio remote controls is a safety feature. The radio remote control can only be activated if the transmitter is within the vicinity and in view of the receiver. This ensures unintentional crane or machine activation.