Plug-in module
WB-MRM2-mini v.2
Dual channel mini-module
WB-MRM2-mini v.2
$31.51
Retail price
In stock 517 pcs.

Compact relay module with 2 outputs: 10 A for NO version and 3 A for NC version; 2 inputs and control via RS-485. Installed in junction boxes and cable ducts.

It is used to control lighting, curtain and gate drives, general-purpose loads in automation systems for residential, office and industrial premises.

Main characteristics

Advantages
  • Installation in junction box and cable channel.
  • Powerful relays that can withstand high inrush currents.
  • Recognition of button presses on inputs and flexible configuration of the response of outputs to presses allows you to control one or more outputs from any inputs.
  • Pulse counting and frequency measurement at the inputs for connecting counters with pulse output and measuring motor rotation speed.
  • Safe mode in case of RS-485 communication failure.
  • Programmable protection against bounce of switch contacts.
  • Fast and easy integration into automation and monitoring systems.

Supports Fast Modbus ⚡, which allows you to instantly deliver input states and click counter values to the Wiren Board controller.

HgtYfFZMBU4F8Y1z_PhEhneKbXJbEWOL.png
Hardware

Specifications:

  • 2 relay channels.
  • Modifications:
    • NO — Normally Open relay, 10 A / 230 VAC (up to 80 A for 20 ms).
    • NC — Normally Closed Relay, 3A/230VAC.
  • 2 discrete inputs with direct channel control function.
  • Press handling: short, long, double and short, then long.
  • Supply voltage: 9…28 V direct current.
  • Interface: RS-485, Modbus RTU.
  • Extended operating temperature range: -40…+80 °C.
  • Case dimensions: 52 x 24 x 20.5 mm.
Hongfa Long Life Relays

The /NO version uses reliable Hongfa relays with silver tin dioxide (AgSnO) contacts, which ensures operation with high inrush currents up to 80 A (20 ms). Therefore, the WB-MRM2-mini v.2/NO module is well suited for controlling LED lamps.

To ensure the quality of the relay we tested them with high inrush current several times higher than nominal.

The relay manufacturer claims a service life of at least 50 000 operations.

MDFTIiV97aHcSntKHQHEnY8gfQQz6FVB.png
Local control

Flexible configuration of the response of outputs to button presses allows you to use the module for local control of loads and implement simple logic without contactors and intermediate relays. And thanks to its compact size module can be hidden in junction boxes, deep socket boxes and electrical appliance housings.This is convenient in small installations, where there is no controller and no possibility to lay an RS-485 bus.

If the module is connected to a bus, local logic can be combined with commands from the controller. The interaction of inputs and outputs is configured in the web interface of the Wiren Board controller or by writing to Modbus registers, and the settings are stored in the module memory.

LDYXG3Vk3E2_2haHg91Fg72Sg2ndmbH1.png
Safe mode

If the module is installed at a distance from the switchboard and connected to the RS-485 bus, then there is a risk of loss of control from the head unit. In this case, the module will continue to operate from the built-in power source even if the cable is completely broken. In order not to lose control over an important technological process, the module has a safe mode that allows you to switch the relay outputs to a specified state.

For each output, you can configure its own safe state and the need to switch to it in case of loss of communication. In addition, you can enable or disable control from inputs in safe mode, for example, prohibit control from buttons when communication with the device is lost.

Curtains controlling

In the module WB-MRM2-mini v.2/NO is a special mode of operation with curtains, which eliminates the simultaneous activation of the direction relay and guarantees a pause between switchings. In the settings, you can set the opening/closing time, pause time when changing direction, as well as actions when turning on the power and entering safe mode.

The outputs are individually configurable, so only part of the outputs can be used to control curtains, and the rest can be used for other purposes. You can also configure the curtain action for each of the 4 types of button presses connected to the module inputs.

6E0gHENuK-vxLRxG8m-ypT4Lj4wPvle8.png
Quality control at every stage production

We develop and manufacture all Wiren Board devices ourselves. All devices undergo multi-stage quality control:

  • During development — checking the components used for compliance with the declared characteristics and testing the prototype device at extreme operating conditions.
  • After installing SMD components — automated optical inspection.
  • After soldering the lead components — visual inspection of soldering.
  • After assembling the device — functional testing on an automated stand.
  • When shipped to the warehouse — control of completeness, stickers, appearance.

Thanks to this approach, the failure rate is no more than 0.5% of all released devices. Read more in the article About device reliability.

If the device fails within two years from the date of purchase, we will replace it for free without the need to send it to a service center.

ADQS3eW5SaMgSfTGhW_GeP9sxGAoX-NJ.png
Setup

When used with a Wiren Board controller, you can use the mouse in the web interface:

  • enable and disable channels and configure the polling period,
  • set input operating modes,
  • configure the reaction of outputs to inputs,
  • set the state of the outputs when power is applied,
  • configure safe mode settings,
  • adjust the contact bounce protection time,
  • switch the outputs to the curtain drive control mode.

When used with other equipment, the module can be configured via the RS-485 bus by writing values to Modbus registers. The register table is open, well documented and available online in the device documentation.

ZxI2NbZy3MuFxYcfT1TwjGxXKLkDvLtP.png
Reading the readings

If a Wiren Board controller is used, then the states of inputs, outputs and button press counters available in the controller's web interface and can be used in automation scripts or transferred to a higher-level system. The device card displays only the channels enabled in the survey settings.

The module also transmits all data via Modbus RTU (RS-485), which can be read by any equipment or software that supports this protocol: third-party controllers, HMI panels or SCADA.

F6vTY1ZfzpN1SfIwzvGLxAY4gT2w322A.png

Legal purchase terms

General provisions

1. These terms of sale is developed on the basis of the RF Civil code, RF Law on February 7, 1992 № 2300-1 "On consumer protection", decrees of the Government of the Russian Federation of September 27, 2007 № 612 "On approval of rules of sale of goods remote way" and other normative-legal acts. These rules regulate the procedure for retail purchase and sale of Goods through the online store, being a public offer addressed to individuals and legal entities ("Buyers").

2. the Buyer accepts the terms and conditions set out in these terms and conditions by placing an Order on the online store's website.
An order is considered to have been executed properly if the Buyer provides the Seller with the following information: the buyer's last Name, first Name, phone number, address to deliver the Product, Product name, quantity.

2.1. the Buyer grants the Seller the right to use all personal data transmitted in the Order in order to fulfill its obligations to the Buyer, form and develop a loyalty program for Buyers, and inform Buyers about the news of the online store. The right of use in these terms is understood as the Seller's right to: collect, record, systematize, accumulate, store, clarify (update, change), extract, use, depersonalize, block, delete, destroy data with the right to transfer such data to third parties without further notice to the Buyer.

3. when selling goods remotely, the Seller offers the Buyer services for the delivery of Goods by delivery Services. In this case, the specific delivery Service for each Order is determined by the Buyer when placing the order.
Delivery is available on weekdays from 9: 00 to 18: 00. Delivery times depend on the selected region and range from 1 to 14 business days (not counting the day of the order). The delivery period may be extended in cases stipulated by the delivery Service's operating rules. Delivery is carried out without demonstration. If you do not agree with the delivery terms, You have the right to cancel your order at any time before receiving it.
For more information about regional delivery rates, please visit the website of courier services: SDEK, KSE, EMS.
If the Buyer refuses the Product, the Buyer is charged the cost of delivery in accordance with the tariff in accordance with paragraph 21 of the Decree of the Government of the Russian Federation of 27.09.2007 No. 612 "on approval of the rules for the sale of goods by remote means".
When receiving the Product from the delivery Service, the Buyer must check the appearance of the product packaging (for the absence of deformation, opening). When receiving the Goods, the Buyer puts his signature in the delivery receipt in the box: "I confirm that the shipment was received in closed form, there are no external damages to the packaging, bandages, seals, and the weight of the shipment corresponds to the weight determined when it was received."
If any defects are found on The product packaging, the Buyer must make a note of this in the delivery box on the courier's receipt. After receiving the Order and putting the signature of the Buyer in the receipt in the delivery column without specifying claims to the appearance of the product packaging, claims to external packaging defects (its opening and possible incompleteness of the Product) are not accepted.

4. Payment for ordered Products is made:
By Bank transfer on the invoice issued for the Buyer.A plastic card based on the link generated for the Buyer.

5. Order processing is made in the working days from 10:00 to 18:00 Moscow time. If you place your order after 18:00 Moscow time, our managers will contact you on the next business day after 10:00 am.

6. the Product is of good quality, you can return it within fourteen days from the date of receipt of the Order, provided that the product has not been used.
To do this, you need to write an email with a request for a refund/exchange to info@contactless.ru.
Please note that if the Buyer refuses the Product, the Seller returns the amount paid by the Buyer for the Product, with the exception of the Seller's expenses for delivery of the returned Product from the Buyer, no later than 10 days from the date of submission of the corresponding claim.

7. the Warranty period for the Product is set at 24 months from the date of shipment.

8. the Risk of accidental loss or accidental damage to the Product passes to the Buyer at the time of transfer of the Product and the Buyer's signature in the documents confirming the delivery of the Order. Ownership of the Product passes to the Buyer at the time of transfer of the Product, subject to full payment.

9. the legislation of the Russian Federation applies to the relations between the Buyer and the Seller.

10. the Seller reserves the right to make changes to these terms of sale, and therefore the Buyer undertakes to regularly monitor changes in the Rules posted on the website of the online store. The Seller must post a notice of changes to these terms of sale no later than 7 (seven) calendar days before their effective date.

11. the Buyer guarantees that all the terms of these terms of sale are clear to him, and he accepts them unconditionally and in full.

12. the Invalidity of any provision of these Rules does not entail the invalidity of the remaining provisions.

13. all disputes arising between the Parties will be resolved through negotiations. if an agreement is not reached, the dispute will be referred to the arbitration court of Moscow in accordance with the current legislation of the Russian Federation.