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Alpha AL520, 500 Series Replacement Radio Control Transmitte

Alpha 520, (4) 2-speed buttons, 500 Series Replacement Alpha Radio Transmitter

Alpha AL520, 500 Series Replacement Radio Control Transmitter

Four 2-Speed Buttons

Transmitters are powered by Rechargeable Ni-MH AA size battery 2.4v and come with an Electromagnetic Induction Charger

Different channels available for locations that will use multiple radio units in close proximity. Please select varying channels for these types of applications or consult an Ace radio specialist for help.

Transmitter Specifications

Frequency Range:

433 MHz

Transmitting Range:

>100 meters

Hamming Distance:


Channel Spacing:


Frequency Control:

Quartz Crystal

Transmitting Power:


Enclosure Rating:


Source Voltage:

3.0V (“AA” alkaline batteries x 2)

Current Drain:

10 ~ 18mA

Operating Temperature:

-10℃ ~ + 75℃ (14゚F ~ +158゚F)


140 x 68 x 33 mm


200g (include batteries)

Receiver Specifications


Narrow Band FM

Decoding Reference:

Quartz Crystals

Frequency Control:

Synthesizer (PLL)



Responding Time:


Output Contact:

250V @10A

Enclosure Rating:

IP-65 / IP-66

Source Voltage:

AC 24V~440V available

Power Consumption:


Operating Temp:

-10℃ ~ +75℃ (14゚F ~ +158゚F)


310mm × 134mm × 72mm 12.2 x 5.3 x 2.8 (inch)


1,625g with output cable (3.6lb with output cable)

Notable Features of the Alpha 500 Series Radio Control Transmitter:

  • 100% Error Free Transmission

    Advanced microprocessor 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 advanced CRC (Cyclical Redundancy Check) and Hamming Code Error (Error Recovery) programming.

  • Safe Design

    Safety features include receiver self-diagnosing, transmitter self-diagnosing, transmitter low-voltage detection and warning, transmitter and receiver MAIN deactivation when the transmitter is not in use, during transmitter low-voltage, and when the system is in sleep mode.

  • 32,769 Unique ID Codes

    The encoder/decoder system utilizes advanced microprocessor control. The availability of 32,768 sets of unique ID codes will ensure that only commands from the matching control transmitter can be carried out without any interference from other radio systems.

  • Main Safety Relay

    For added safety our advanced design utilizes a special Safety Relay for the Main EMS circuit. If the receiver MAIN relay is defective (Example: Fails to open in response to a Stop command) a fault will be detected and the system will shutdown (open) all output relays immediately.

  • 150 Hour Battery Life

    Efficient power saving circuit requires only two "AA" type alkaline batteries. The battery life is good for more than 150 hours of continuous operation between battery replacements, which ensures higher productivity in the workplace by minimizing frequent replacement or recharging of batteries.

Select a Channel
Select a channel for the radio system. If you are using multiple units in close proximity, please select different channels for each radio.
Remote ID
Type in your ID if you want a specific ID. Type in Your ID if you want a specific ID. Type in Your ID if you want a specific ID. EX. 18:00000000.
Add a Rubber Cover
Protect your remote with a rubber cover!
Base Price: $267.50 Customized Price: $267.50
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