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System Self-Diagnosing Functions
The Twister 2X is equipped with numerous self -diagnosis; functions, which include transmitter low-voltage detection, faulty pushbutton and joystick detection, faulty MAIN contact relay detection, faulty relay card detection.. faulty EEPROM detection, faulty RF module detection, and many others...
Programmable Pushbutton Functions
Numerous pushbutton functions can he prograrnmed via an in-house designed programmer unit.
Durable and Lightweight Joysticks
The in-house designed mini joysticks are made from variety of composite materials, which include metal, stainless steel, zinc alloy, magnesium alloy and aluminum alloy. The combination of these materials make the joysticks extremely durable,  reliable and ultra Lightweight.  

Photo-Interrupter Sensors
 The system incorporates advanced photo-interrupter
sensors for the joystick contacts. These photo interrupter sensors are extremely reliable and curable, which last many times longer than the conventional brush or coil type contacts.
BUS Structured Receiver
The BUS structured receiver unit with removable flex cards provide easy service maintenance and inventory of spire parts
Intelligent Charger
All systems are equipped with a single-slot battery charger with voltage, temperature and overcharge protection. The charge: is also equipped with discharging/auto charging function to prevent any battery memory buildup.

The Twister 2X is a highly sophisticated industrial radio remote control system.
The versatile features of Twister 2X permit its usage in a wide range of industrial applications. The system can be used to control all types of industrial cranes, tower cranes, building construction equipment, automatic control systems, mining equipment and many others..
The Twister 2x incorporates numerous advanced features and software programming that will ensure maximum security and safety in the work place
Advanced Software Programming
The system is equipped with highly evolved software that has redundant error checking and correcting capabilities to ensure 100% error-free transmission, decoding and control of all output relays. This highly evolved software includes CPC (Cyclical Redundancy Check) and Hamming Codes (Error Recovery).

Advanced Encoding System
The encoding system utilizes advanced microprocessor control for 100% error-free data transmission. The availability of 65,536 sets of unique security ID codes will ensure that only commands from a snatching control transmitter can be carried out without any interference from other radio systems.

Advanced Decoding System
The decoding system utilizes dual-microprocessor control, which will ensure 100% error-free calculation, bit checking and correction of all incoming data.

Central Microprocessor
A unique central microprocessor is used for data comparison and cross-checking among the two decoding microprocessors. When faults are detected via this central microprocessor, for maximum safety the entire system will be shut down immediately to avoid possibility of any accidents occurring.

PLL Transmission
The system utilizes advanced PLL synthesized RF transmission. It allows the user to select from a wide range of RF channels best suited for environment. The RF channel is selected via simple dip-switch settings inside the transmitter unit. The RF channel for the receiver is selected via simple button setting on the receiver LCD control panel. The receiver also has the ability to auto-scan from a wide range of RF channels. The receiver will search and locked on to the intended matching control transmitter.

Full Compliance
The Twister 2X is designed and manufactured in accordance with FCC Part-15 Rules, European Directives ((E/CB), Industry Canada specifications (IC) and ISO 9001 guidelines. No site license is required
Frequency Range   : PLL 433 MHz
Transmitting Range  : 100 Meters / 300 Feet
Continuous Operation  : 16+ hours (600mA)
ID Code    : 6553b Sets
Channel Spacing   : 25KHz.
Hamming Distance   :> =6
Frequency control   : Synthesizer (PLL)
Frequency Drift   : <3ppm @-25oC-75 oC
Frequency Deviation  : < 1 ppm @ 25°C
Spurious Emission   : > 60dBc
Transmitting Power  : 0.3 ~ 1.0mW
Emission    : F1D
Antenna Impedance  : 50 Ohms
Enclosure    : TP-66
Source Voltage   : 7.2V (600mA or 1400mA
Current Drain   : ~80mA
Operating Temperature  : -25 oC ~ 75 oC
Dimension    : 247mm x 154mm x 182-mm
Weight    : 1,600g (include battery pack)
Frequency Range  : PLL 433 MHz.
Sensitivity    :-125dBm
Decoding Reference  : FSk
ID Code    : 65.596 Sets
Channel Spacing   : 25KHz.
Hamming Distance   : =>6
Frequency control   : Synthesizer (PLL)
Frequency Drift   : <3ppm @ 25 oC ~75 oC
Frequency Deviation  : < 1ppm @ 25°C
Decoding Reference  : Quartz Crystals
Responding Time   : 100mS ~ 300mS
Output Contact   : 250V' @10A
Antenna Impedance  : 50 Ohms
Enclosure    : IP-66
Source Voltage   : 100-240VAC @ 50/60Hz.
Power Consumption  : 36VA
operating temperature  : -25 oC ~75 oC
Dimension    : 417 mm X 309mm X 167mm
Weight    : 8,800g
radio remote controllers.pdf
Radio Control Systems – Twister