Waveshare 24921 Modbus RTU 16-Ch Relay Module, RS485 Interface, With Multiple Isolation Protection Circuits

$71.13
  Availability: In Stock
  Shipping: Free Airmail 
  Estimated Delivery: 
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  •   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

    Returns

    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
    Israel

    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.

    Refunds

    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.

    Exceptions

    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.

    Questions

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

    +972 054-536-2888
    sales@alexnld.com

     


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Features:
1. This product is an industrial-grade 16-channel relay module controlled by RS485 bus, using Modbus RTU protocol, built-in power isolation, ADI magnetic isolation, resettable fuse, TVS diode and other protection circuits, and equipped with ABS case.
2. Modbus RTU 16 channel relay is very easy to use. Due to its fast communication speed, stability, reliability and security, it is ideal for industrial control equipment and/or applications with high communication requirements.
3. Configurable device address (1-255), multiple devices can be cascaded on the RS485 bus
4. It has the function of blinking and blinking. By passing parameters to the command, the relay can be opened for a period of time and then automatically closed
5. On-board integrated power isolation, providing stable isolation voltage, no additional power supply is required at the isolation end
6. Onboard integrated ADI magnetic isolation, which can realize signal isolation, high reliability, strong anti-interference and low power consumption
7. Onboard resettable fuse and TVS (transient voltage suppressor), effectively suppress surge voltage and transient peak voltage in the circuit, provide overcurrent/overvoltage, lightning protection, anti-static
8. On-board optocoupler isolation to prevent the relay from being interfered by the high-voltage circuit
9. On-board dedicated relay driver chip, built-in freewheeling diode protection, stronger and more stable driving capability
10. Anti-reverse connection circuit to prevent accidental damage to the circuit by wrong connection
11. High quality relay, contact rating: ≤10A 250VAC/30VDC
12. Rail-type ABS shell, easy to install and safe to use
13. There are 3 LEDs for indicating MCU status and signal sending and receiving status

Product parameters:
1. Working voltage: 5V
2. Communication interface: RS485
3. Baud rate: 4800, 9600, 19200, 38400, 57600, 115200, 128000, 256000
4. Default communication format: 9600, N, 8, 1
5. Relay channel: 16
6. Contact information: 1NO 1NC
7. Communication protocol: standard Modbus RTU protocol
8. RS485 address: 1-255
9. LED indicator light:
STA: MCU indicator light, it keeps flashing when the MCU is working normally
TXD: TX indicator light, lights up when sending data
RXD: RX indicator light, lights up when receiving data

Packing list:
-Modbus RTU relay 16CH x1
-US Plug 5V 2A power supply (with EU head adapter) x1

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Product ID: 20359074 Category: Brand: WAVESHARE
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