16CH 5 IN 1 Modbus Rtu Digital IO Module RS485 NPN PNP DI-DO Pin Core Board Switching Input Output PLC HMI Remote IO Expanding

16CH 5 IN 1 Modbus Rtu Digital IO Module RS485 NPN PNP DI-DO Pin Core Board Switching Input Output PLC HMI Remote IO Expanding

$4.85
2 In 1 CH Discharger Board DC DC Converter Step-up Module Charge In 4.5-8V Boost Out 5V For UPS Mobile Power Diy

2 In 1 CH Discharger Board DC DC Converter Step-up Module Charge In 4.5-8V Boost Out 5V For UPS Mobile Power Diy

$28.18
2A DPDT Relay Module – Motor Forward Reverse Self-Locking Controller with Pluggable Terminal for DC Polarity Reversal & Bistable Control

2A DPDT Relay Module – Motor Forward Reverse Self-Locking Controller with Pluggable Terminal for DC Polarity Reversal & Bistable Control

$4.85
3.3V 5V 12V 24V Digital Signal Isolation Module – 10kHz DI-DO Optocoupler Logic Level Converter for PLC RS485 IO Communication

3.3V 5V 12V 24V Digital Signal Isolation Module – 10kHz DI-DO Optocoupler Logic Level Converter for PLC RS485 IO Communication

$16.06