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Blue Specialty Electrical Switches & Relays

Shop the best prices on 174 great value blue specialty electrical switches & relays. Shopping for specialty electrical switches & relays is easy with Fruugo, with SALE discounts, offers and savings on many brands. Buy specialty electrical switches & relays online safely with Fruugo, with secure payment and fast shipping to Canada.

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1 - 32 of 174
DC 12V Timing Timer Delay 1-10S Time Adjustable Relay with Indicator Light Turn OFF Relay Module Tr
$7.95 Save $3.00 RRP: $10.95
2Pcs USB to RS485 Converter Isolate Module Upgrade Industrial TVS ESD Protection CH340E Standard -4
$8.95 Save $4.00 RRP: $12.95
10X USB to RS485 Communication Module Bidirectional Half-Duplex Serial Line Converter
$31.95 Save $6.00 RRP: $37.95
10PCS TTP224 Digital Touch Sensor Capacitive Switch Module Button 4 Channel Capacitive Switch Modul
$9.95 Save $7.00 RRP: $16.95
12V Light Control Switch Photoresistor Relay Module Detection Sensor XH-M131
$5.95 Save $3.00 RRP: $8.95
LCUS - type 1 USB relay module USB intelligent switch control
$6.95 Save $4.00 RRP: $10.95
2Pcs USB to RS485 Converter Isolate Module Upgrade Industrial TVS ESD Protection CH340E Standard -4
$7.95 Save $4.00 RRP: $11.95
Modbus Rtu 4 Relay Module Input 485 Ttl Uart Communication 4-Channel Input 7-24V Relay Module
$10.95 Save $5.00 RRP: $15.95
Xh-M203 Full Automatic Water Level Controller Pump Switch Module Ac/Dc 12V Relay Sensors
$6.95 Save $3.00 RRP: $9.95
-X804 -OFF Protection Module Automatic Switching Controller Board DC12V-48V Emergency Automatic Con
$6.95 Save $3.00 RRP: $9.95
4 Digit LED DC 8 -36V 8 Channel Multifunction Relay Control Module with Power Indicator Relay Sucti
$42.95
USB to RS485 Communication Module Bidirectional Half-Duplex Serial Line Converter
$9.95
LCUS - type 1 USB relay module USB intelligent switch control
$9.95
12V DC Delay Relay Delay Turn on / Delay Turn Off Switch Module with Timer
$8.95
-3.3 Regulator Power Supply Module 4.75V-12V to 3.3V 800mA (Pack of 5)
$5.95 Save $38.00 RRP: $43.95
WIFI Relay Controller Module, DC 5V 8V-80V ESP8266 Wireless Controller Module ESP-12F for IOT Smart
$10.95 Save $37.00 RRP: $47.95
ME-8111 AC250V / 5A DC115V / 0.4A DPST Momentary AC Limit Switch for CNC Mill
$10.95
2Pcs USB to RS485 Converter Isolate Module Upgrade Industrial ESD Protection CH340E Standard -485 Connector Board
$13.95
-X804 Power-OFF Protection Module Automatic Switching Controller Board DC12V-48V Emergency Automatic Conversion Module
$9.95
LCUS - type 1 USB relay module USB intelligent switch control
$10.95
12V 20A In Out ON-OFF-ON Rocker Switch 7 Pin LED blue
$9.95
Modbus Rtu 4 Ch Relay Module Ttl Uart Communication 4-Channel Input
$12.95 Save $5.00 RRP: $17.95
Xh-M203 Full Automatic Water Level Controller Pump Switch Module 12V Relay Sensors
$7.95 Save $4.00 RRP: $11.95
12V DC Delay Relay Delay Turn on / Delay Turn Off Switch Module with Timer
$7.95 Save $4.00 RRP: $11.95
2Pcs USB to RS485 Converter Isolate Module Upgrade Industrial ESD Protection CH340E Standard -485 C
$11.95
ME-8111 AC250V / 5A DC115V / 0.4A DPST Momentary AC Limit Switch for CNC Mill
$6.95 Save $3.00 RRP: $9.95
2 in 1 Pump Pour Water Automatic Controller DC12V Liquid Level Sensor Switch Relay Module for Motor
$6.95 Save $9.00 RRP: $15.95
Yx850 Power Failure Automatically Switch Module Emergency Converter
$6.95 Save $2.00 RRP: $8.95
10Pcs 16CH Analogue Multiplexer Module 74HC4067 CD74HC4067 Module
$11.95 Save $4.00 RRP: $15.95
12V DC Delay Relay Delay Turn on / Delay Turn Off Switch Module with Timer
$5.95 Save $3.00 RRP: $8.95
12V DC Delay Relay Switch Module with Timer for Delay Turn On/Off
$25.95
Xh-M203 Full Automatic Water Level Controller Pump Switch Module Ac/Dc 12V Relay Sensors
$6.95 Save $4.00 RRP: $10.95