Eletechsup

Eletechsup offers relay boards, signal interface modules and temperature acquisition adapters for controllers and automation projects. SpareX accepts sourcing requests by full model and electrical configuration.

Selected modules
R4D3B16 is a 16-channel RS485 Modbus RTU relay board, with a 12 V DC DIN-rail version described in the official catalogue. OPMSA04 is a four-channel signal amplifier with optocoupler inputs and transistor outputs. OPMSB08 provides eight channels for logic-level and PWM signal interfacing. OPMSD16 offers 16 MOS output channels and a DIN-rail mounting option. N4DSB03 connects two DS18B20 temperature sensors to an RS485 Modbus RTU network.

Electrical matching
Confirm NPN or PNP configuration, input levels, output voltage and load conditions. RS485 alone does not establish protocol compatibility: check Modbus registers, address and serial settings. A DIN-rail carrier does not necessarily provide a fully enclosed housing.

Send the model, quantity, power supply, channel count and controller details. Add board photos and a wiring diagram for replacements. Specify whether sensors, cables or mounting accessories are required. Availability, pricing and delivery time are confirmed for the selected version.

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