4 Channel Analog Converter Input 0-20MA/4-20MA/0-5V/0-10V Output RS485 MODBUS


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


Product introduction:

4 analog converters, can input 2 0-20mA, 4-20mA, 2 0-5V, 0-10V four analog input signals, input analog signal data, output through the isolated RS485 interface, the module adopts Modbus -RTU communication, can directly adapt to PLC, DCS and various configuration software, etc.
The signal input and the RS485 communication electrical signal are isolated from each other, effectively suppressing various serial mode and common mode interference, ensuring the accuracy of the data, and also ensuring the reliable operation of the module.


1. Adopt standard Modbus-RTU protocol.
2. Safety: signal input and RS485 communication electrical signal are isolated from each other
3. Communication protection: RS485 communication signal output interface adopts overvoltage and overcurrent double protection.
4. The input signal type and communication format can be set by the host computer software.
5. The power polarity is protected against reverse connection.

Electrical parameters:

signal input 1. Input signal: 4 analog inputs
2. Input signal type: 0-20mA, 4-20mA, 0-5V, 0-10V four analog signals
3. Sampling rate: 4 channels are collected once every ImS
4. Resolution: 12-bit AD
5. Accuracy: Voltage 0.5%, Current 0.5%
6. Isolation voltage protection: 1500V
RS485 communication output 1. Communication protocol: MODBLS-RTU
2. Interface type: isolated RS485 communication, the output interface adopts double protection of overvoltage and overcurrent
3. Baud rate: 4800, 9600, 19200, 38400, 57600 The default is 9600
4. Check Digit: No Check
5. Setting method: module address can be set by software
6. Isolation voltage protection: 1500V
Module size 88*55*44mm
Installation method 35 standard card rail type
working environment Temperature: TO to +55℃ Humidity: 35 to 85% (no condensation)
Power supply 1. Power supply voltage: 10V-30V wide range power supply, power supply anti-reverse protection
2. Power consumption: less than 1W

Terminal interface description:

Number Terminal Description Parameter Number Terminal Description Parameter
1 11+ Analog input 1 current positive 0-20mAs 4-20mA 1 VIN Power input positive 24V
2 11- Analog input 1 reference ground GND 2 GND Power input negative GND
3 12+ Analog input 2 current positive 020mAs 4-20mA 3 485A RS485 A
4 12- Analog input 2 reference ground GND 4 485B RS485 B
5 V1+ Analog input 1 voltage positive 0-5V0-10V 5 VOUT Power output positive <24V
6 VI- Analog input 1 voltage negative GND 6 VOUT Power output positive <24V
7 V2+ Analog input 2 voltage positive 0-5V0-10V
8 V2- Analog input 2 voltage negative GND

Package includes:

1 x 4 Channel Analog Converter

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