4-20mA 24V High Precise Professional Adjustable Digital Signal Generator Sources Current Voltage Analog Simulator


  Availability: In Stock
  Shipping: Free Airmail 
  Ship From: China Warehouse
  Estimated Delivery: 
  •   Shipping Methods

    Handling Time

    Before we can ship your order, we prepare your products, do strict quality-control tests and carefully package the items. The time it takes to prepare your items for shipping is separate from the delivery time. It usually takes 1-3 business days to ship out .

    Shipping Methods

    You can choose the preferred shipping method on the cart page during the checkout process. We offers 3 international shipping methods:

    1. Airmail – Free untracked economy shipping via national postal services (HK Post, Singapore Post, China Post, PostNL, Swiss Post, Sweden Post, USPS, Royal Mail e.t.c.)
    2. Airmail Registered – Tracked shipping via national postal services (HK Post, Singapore Post, China Post, PostNL, Swiss Post, Sweden Post, USPS, Royal Mail e.t.c.)
    3. Expedited Shipping – Express shipping with courier delivery (DHL, UPS, FedEx, TNT)

    Delivery Time

    Airmail and Airmail Registered Area Estimated Delivery Time
    United States, Canada 7-25 business days
    Australia, New Zealand, Singapore, United Arab Emirates 10-25 business days
    United Kingdom, France, Spain, Germany, Netherlands, Japan, Belgium, Denmark, Finland, Ireland, Norway, Portugal, Sweden, Switzerland 10-25 business days
    Italy, Brazil, Russia, South Africa 10-45 business days
    Other countries 10-35 business days
    Expedited Shipping 3-10 business days to Worldwide

    Note: If you choose an expedited shipping, please remember to leave a valid contact number, this is required for expedited shipping’s courier delivery.

  •  Returns & Refund

    Last updated October 05, 2022


    If you are not completely satisfied with your purchase for any reason, you may return it to us for a full refund within 15 days from delivery date. All returned items must be in new and unused condition, with all original tags and labels attached.

    Return Process

    To return an item, please email our customer service at sales@alexnld.com to obtain a Return Merchandise Authorization (RMA) number. After receiving a RMA number, place the item securely in its original packaging, and mail your return to the following address:

    Alex NLD
    Attn: Returns
    RMA #
    HaGiborim St 8
    Tiberias, 14388

    Please note, you will be responsible for the return shipping charges. We strongly recommend that you use a trackable method to mail your return.

    All customers should contact us and obtain Return Merchandise Authorization (RMA) number before sending anything to us. We will not be responsible for returned item(s) without notifying us in advance.


    After receiving your return and inspecting the condition of your item, we will process your refund to the credit / debit card or PayPal account which was used to place the original order.

    Please allow at least seven (7) days from the receipt of your item to process your refund. Refunds may take 1-2 billing cycles to appear on your credit card statement, depending on your credit card company. We will notify you by email when your refund has been processed.


    If an item is found damaged or defective on receipt, we kindly ask you to contact us within 15 days from the delivery date to arrange a refund or exchange without physical return of the item.

    Please provide us with following:

    1. Photos of the front and back sides of the packaging box;
    2. A photo, video or screenshot of the defective item or the defective part of the parcel.

    Our customer service team will communicate with you to arrange a refund or reshipment without physical return of the item.

    Warranty & Repair service

    If any of the items you have purchased from us is found defective within 1 year from receipt, you are entitled to a repair under warranty. Please kindly provide us with evidence photos or videos of the defective item. After providing such information to our Customer Service team  and the problem is acknowledged, you can send the items back to us for a repair.

    Note:  Please be aware, we do not cover the cost of the returns fees in  warranty & repair service.

    Order Cancellation

    If you want to cancel an order within 24 hours from confirmation of the payment, you will be entitled to a full refund. It is still possible to cancel an order after 24 hours, provided that it has not yet been shipped. If an order has been shipped, it’s impossible for us to cancel or modify it anymore. If you still want a refund, you required to return the item on it’s arrival.


    If you have any questions concerning our return policy, please contact us at:

    +972 054-536-2888


WZ_SIGNAL signal generator is mainly used for debugging of industrial field PLC, process instrumentation, electric valve and so forth. It’s easy to use with a friendly Chinese character operation interface. The signal generator is small and light but has a long standby time and high precision.
Internal reverse and overcurrent protection, 30V protection voltage.
Built-in one single 3.7V lithium battery power supply; the using time varies, based on the usage (It can be more than 6 hours with 20mA continuous output).
With internal battery voltage hint, (UV light)when the undervoltage light is on, please turn off the charging.
Do not use for a long time, please charge once every two months.
Charge with micro USB.
Operating temperature range 0-50 degrees Celsius.
Custom Function:
In order to facilitate on-site debugging, the upper and lower limits of the output signal can be set according to the requirements of the equipment. The active 4-20mA output upper and lower limits, passive 4-20mA output upper and lower limits, and 0-12V output upper and lower limits can be set separately, and this function can be freely put on and off for field application.
Automatic Output Function:
This function can automatically change the output mode according to the program. It can be automatically output only by setting the parameters, which is used for aging and automatic testing of valves and other equipment.
This function consists of the following parts: automatic mode, cycle number, initial value, incremental value, decrement value, incremental time, decrement time, starting point delay, endpoint delay, and end value. For active current, passive current, and voltage output, there are separate setting parameters to facilitate the setting of various output signals.
VC Conversion Function:
This function is mainly used for some temporary voltage and current conversion, such as converting 0-10V input to 4-20mA output.
VC active conversion: converts the voltage signal input into an active current signal output VC passive conversion: converts the voltage signal input into a passive current signal output
C-V conversion: converts the current input signal into a voltage signal output
The function rules consist of several parts: VC conversion switch, conversion mode, voltage upper limit, voltage lower limit, current upper limit, current lower limit, and overrange.
Name: Signal Generator
Active current output: range: 0-24mA; resolution: 0.01mA; maximum load: 750?
Passive current output: range: 0-24mA; resolution: 0.01mA; external power supply up to 30V.
Voltage output: range: 0-12V; resolution: 0.01V; maximum current 30mA
24V voltage output: drive current: 24mA.
Current input measurement: range: 0-24mA; resolution: 0.01mA; input impedance: 100?
Voltage input measurement: range: 0-30V; resolution: 0.01V; input impedance: 2.5M?
Operating environment: 0°C-50°C
Protection voltage: 30V
Item size: 90 x 70 x 28mm / 3.54 x 2.76 x 1.10in
Package size: 150 x 100 x 80mm / 5.91 x 3.94 x 3.15in
Package weight: 160g / 5.64ounce
Package included:
1 x Signal Generator
3 x Test Cable

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