Connect pumps, PLCs, gates, sensors and alarms over a private LoRa link. Extend switch states and measurements without trenching for signal cables — no SIM card, Internet connection or LoRaWAN gateway needed.
For auxiliary control and signalling. Emergency-stop, life-safety and hard-real-time circuits must stay on their own independently certified system.
Common starting points
These examples show the signal relationship, not a finished-system design. Check safety, load and compliance details for your application.
Start with Y401 or Y402
Send an approved control contact to a remote relay or suitably rated contactor for pumps, fans, gates or other field equipment.
Start with Y401 or Y402
Bring remote contact states or sensor measurements to PLC inputs without a long signal cable.
Start with Y401 or Y402
Pass a dry-contact status or control signal between access-control equipment and a remote relay point when you can't run a new cable.
Start with Y401 analog
Bring a pressure, level, flow or temperature transmitter signal back to a remote instrument or controller input without a long analog cable.
Start with Y403
Connect distributed dry contacts. An event at any node energizes every linked relay output.
Less signal cabling. More flexibility.
Extend I/O between buildings, equipment and remote field points. Each endpoint still needs local power.
A private LoRa link pairs the modules directly, without a SIM card or LoRaWAN gateway.
Transfer contact states to relay outputs, or recreate 4–20 mA and 0–10 V signals with dedicated analog models.
Up to 5 km in open areas. Selected configurations offer a 10 km option; antennas and site conditions determine actual range.
How it works
Power both modules locally. LoRa carries the signal between them.
A switch or NPN input changes the linked relay state.
Use passive contacts or NPN open collectors at DI. Supply the load separately; use a contactor where required.
The matching remote analog output recreates the sensor signal.
Choose 4–20 mA or 0–10 V models to match both instruments. Check instrument power, accuracy and output load. Analog models have no digital I/O.
View wiring details
Signal type, then connection
Choose how your digital signals link, or select analog models for sensor measurements.
Corresponding DI channels at either node drive the remote node relay outputs.
Compare Y401 in Docs
Master inputs drive corresponding outputs at all slaves; slave inputs drive the matching master output.
Compare Y402 in Docs
Any closed node input energizes all linked outputs, including the local output.
Compare Y403 in DocsReady for the next step?
Common questions about digital and analog Wireless I/O Modules.
It extends field signals over a private LoRa link. Digital models transfer dry-contact or NPN input states to relay outputs; dedicated Y401 analog models reproduce sensor signals at corresponding remote analog outputs.
Yes. A wireless contact-closure link carries the state of a passive dry contact to a relay output at another location. These modules use a private LoRa link for that purpose. Choose Y401 for corresponding inputs and outputs at two locations, Y402 for a master and multiple slaves, or Y403 for shared multi-node activation. Confirm the required trigger and reset behavior before selecting a model; never apply voltage directly to DI.
Choose Y401 for a two-location point-to-point link, Y402 for one master and multiple slave locations, and Y403 when any node input must activate all linked node outputs.
The digital inputs accept passive dry contacts or NPN open-collector signals. Never apply voltage to a DI terminal. Confirm the field-device output type before wiring.
Digital models provide dry-contact relay outputs. Check the selected model’s contact rating; use a suitably rated contactor and surge suppression for motor or inductive loads. Relay contacts do not supply load voltage. Analog models have no relay outputs.
No. Do not use this wireless link as the only emergency-stop, personnel-safety, life-safety or hard-real-time control path. Keep required safety functions on an independently designed and approved system.
Yes. Y401-0011-L provides 1 AI and 1 AO per module for 4–20 mA. Y401-0044-L provides 4 AI and 4 AO per module, with 4–20 mA or 0–10 V ordering options. Both use point-to-point links and have no digital I/O. Match the signal type at both ends and check power, accuracy and output loading in the model specification.
Need a gateway-based LoRaWAN network? Compare LoRaWAN products
What do you want to connect? Describe your equipment and approximate distance. We’ll help check whether wireless I/O fits — no model number needed.
