Relays / FETs

Solid-State and Electromechanical Relay Products

ACCES I/O OFFERS A VARIETY OF RELAYS FOR DIFFERENT APPLICATIONS

Relay is the name for a switch that is operated electro-mechanically or electronically. Their main task is to make and break connections to control the flow of current in electrical circuits. They’re used for various purposes ranging from validating semiconductors to interfacing low power computers or microcontrollers with high power machinery.

There are two main types of relays. Electromechanical Relays use an inductor to mechanically operate the arm of the switch while Solid State Relays (SSR) have no moving parts but instead use the electrical and optical properties of semiconductors to perform their switching functions. 

At ACCES I/O we use Field Effect Transistor (FET) switches for non-mechanical solutions as they have faster switching speeds and smaller form factors than traditional SSRs.

In order to choose the right relay for your application it is useful to first take note of the key differences between main types of relays.

In Electromechanical Relays (commonly just relays) the connection is controlled by an arm that opens and closes as a response to the magnetic field induced in the coil on the other side. The mechanical robustness of this connection allows it to operate in harsh conditions and to support a wide range of signals, but that’s also what makes this connection slower (5-15ms) and bulkier. Another important occurrence in Electromechanical Relays resulting from its construction is so called contact bounce that causes a noise after switching the relay position to closed but it can be efficiently cushioned by using a debouncing filter.

FETs (often called high side or low side switches) due to their non-mechanical nature offer zero contact bounce and are much faster (0.5-1ms) and smaller. The common problem with them is that they require a minimum load to work and they can switch only DC signals. They’re recommended whenever faster and more frequent switching is required and are a perfect solution for low noise applications like precise measurements.

For more information about different variants of FETs and Electromechanical Relays and guidance on how to choose the right relay for your application, click here.

Relays (Electromechanical (EM) and Solid-State (FET)) Outputs and Isolated Inputs on PCI Express (PCIe)

ModelDigital I/OOPTOsRelayCountersCOSXThf:att:pa_digital-i-ohf:att:pa_optoshf:att:pa_relayhf:att:pa_countershf:att:pa_coshf:att:pa_xt
PCIe-IIRO-88 In & 8 OutYes8 EMYesYesShow details8-in-8-outyes8629yesyes
PCIe-IIRO-1616 In & 16 OutYes16 EMYesYesShow details16-in-16-outyes16629yesyes
PCIe-IDIO-2424 In & 24 OutYes24 SSYesShow details24-in-24-outyes24-ss629571yes
PCIe-IDIO-1212 In & 12 OutYes12 SSYesShow details12-in-12-outyes12-ss629571yes
PCIe-IDI-2424 InYesYesShow details24-inyes570629571yes
PCIe-IDO-2424 OutYes24 SSYesShow details24-outyes24-ss629571yes

Relays (Electromechanical (EM) and Solid-State (FET)) Outputs and Isolated Inputs on USB

ModelDigital I/OOPTOsRelayCountersCOSXThf:att:pa_digital-i-ohf:att:pa_optoshf:att:pa_relayhf:att:pa_countershf:att:pa_coshf:att:pa_xt
USBP-II8IDO4A8 In & 4 OutYes4 SSYesShow details8-in-4-outyes4-ss629571yes
USB-IIRO4-2SM4 In & 4 OutYes4 EMNoneNoNoShow details4-in-4-outyes4nonenono
USB-COM-2SMNoNoneNoneNoNoShow details573nononenonenono
USB-IIRO-4DB4 In & 4 OutYes4 EMNoneNoNoShow details4-in-4-outyes4nonenono
USB-II-1616 InYesNoneNoneNoYesShow details16-inyesnonenonenoyes
USB-IIRO-44 In & 4 OutYes4 EMNoneNoYesShow details4-in-4-outyes4nonenoyes
USB-IIRO-88 In & 8 OutYes8 EMNoneNoYesShow details8-in-8-outyes8nonenoyes
USB-RO-1616 OutYes16 EMNoneNoYesShow details16-outyes16nonenoyes
USB-IIRO-1616 In & 16 OutYes16 EMNoneNoYesShow details16-in-16-outyes16nonenoyes
USB-IDIO-4L4 In & 4 OutYes4 SS-LNoneNoYesShow details4-in-4-outyes4-ss-lnonenoyes
USB-IDIO-8L8 In & 8 OutYes8 SS-LNoneNoYesShow details8-in-8-outyes8-ss-lnonenoyes
USB-IDO-16L16 OutYes16 SS-LNoneNoYesShow details16-outyes16-ss-lnonenoyes
USB-IDIO-16L16 In & 16 OutYes16 SS-LNoneNoYesShow details16-in-16-outyes16-ss-lnonenoyes
USB-IDO-1616 OutYes16 SSNoneNoYesShow details16-outyes16-ssnonenoyes
USB-IDIO-1616 In & 16 OutYes16 SSNoneNoYesShow details16-in-16-outyes16-ssnonenoyes
USB-IDIO-44 In & 4 OutYes4 SSNoneNoYesShow details4-in-4-outyes4-ssnonenoyes
USB-IDIO-88 In & 8 OutYes8 SSNoneNoYesShow details8-in-8-outyes8-ssnonenoyes
USB-DO2424 OutYes24 SSNoneNoYesShow details24-outyes24-ssnonenoyes
USB-DIO24DO1224 I/O (8/8/4/4)Yes12 SSNoneNoYesShow details24-i-o-8-8-4-4yes12-ssnonenoyes
USB-DIO48DO2448 I/O (8/8/4/4 ×2)Yes24 SSNoneNoYesShow details48-i-o-8-8-4-4-x2yes24-ssnonenoyes

Relays (Electromechanical (EM) and Solid-State (FET)) Outputs and Isolated Inputs on USB/104 or Embedded USB

ModelDigital I/OOPTOsRelayCountersCOSXThf:att:pa_digital-i-ohf:att:pa_optoshf:att:pa_relayhf:att:pa_countershf:att:pa_coshf:att:pa_xt
USBP-II8IDO4A8 In & 4 OutYes4 SSYesShow details8-in-4-outyes4-ss629571yes
USB-IIRO4-2SM4 In & 4 OutYes4 EMNoneNoNoShow details4-in-4-outyes4nonenono
USB-COM-2SMNoNoneNoneNoNoShow details573nononenonenono
USB-IIRO-4DB4 In & 4 OutYes4 EMNoneNoNoShow details4-in-4-outyes4nonenono
USB-II4-OEM4 InYesNoneNoYesShow details4-inyes570nonenoyes
USB-II8-OEM8 InYesNoneNoYesShow details8-inyes570nonenoyes
USB-II16-OEM16 InYesNoneNoYesShow details16-inyes570nonenoyes

Relays (Electromechanical (EM) and Solid-State (FET)) Outputs and Isolated Inputs on Ethernet

ModelDigital I/OOPTOsRelayCountersCOSXThf:att:pa_digital-i-ohf:att:pa_optoshf:att:pa_relayhf:att:pa_countershf:att:pa_coshf:att:pa_xt
ETH-IIRO-1616 In & 16 OutYes16 EMYesShow details16-in-16-outyes16629571yes
ETH-IIRO-88 In & 8 OutYes8 EMYesShow details8-in-8-outyes8629571yes
ETH-IIRO-44 In & 4 OutYes4 EMYesShow details4-in-4-outyes4629571yes
ETH-II-1616 InYesYesShow details16-inyes570629571yes
ETH-RO-1616 OutYes16 EMYesShow details16-outyes16629571yes
ETH-IDIO-1616 In & 16 OutYes16 SSYesShow details16-in-16-outyes16-ss629571yes
ETH-IDIO-88 In & 8 OutYes8 SSYesShow details8-in-8-outyes8-ss629571yes
ETH-IDIO-44 In & 4 OutYes4 SSYesShow details4-in-4-outyes4-ss629571yes
ETH-IDO-1616 OutYes16 SSYesShow details16-outyes16-ss629571yes

Relays (Electromechanical (EM) and Solid-State (FET)) Outputs and Isolated Inputs on PCI Express Mini Card (mPCIe)

ModelDigital I/OOPTOsRelayCountersCOSXThf:att:pa_digital-i-ohf:att:pa_optoshf:att:pa_relayhf:att:pa_countershf:att:pa_coshf:att:pa_xt
mPCIe-IIRO-44 In & 4 OutYes4 EMYesYesShow details4-in-4-outyes4629yesyes
mPCIe-RO-88 OutNo8 EMNoYesShow details8-outno8629noyes
mPCIe-IIRO-88 In & 8 OutYes8 EMYesYesShow details8-in-8-outyes8629yesyes
mPCIe-II-44 InYesYesYesShow details4-inyes570629yesyes
mPCIe-II-88 InYesYesYesShow details8-inyes570629yesyes
mPCIe-II-1616 InYesYesYesShow details16-inyes570629yesyes
mPCIe-IDIO-44 In & 4 OutYes4 SSYesYesShow details4-in-4-outyes4-ss629yesyes
mPCIe-IDIO-88 In & 8 OutYes8 SSYesYesShow details8-in-8-outyes8-ss629yesyes
mPCIe-IDO-88 OutNo8 SSNoYesShow details8-outno8-ss629noyes

Relays (Electromechanical (EM) and Solid-State (FET)) Outputs and Isolated Inputs on M.2

ModelDigital I/OOPTOsRelayCountersCOSXThf:att:pa_digital-i-ohf:att:pa_optoshf:att:pa_relayhf:att:pa_countershf:att:pa_coshf:att:pa_xt
M.2-IIRO-88 In & 8 OutYes8 EMYesYesShow details8-in-8-outyes8629yesyes
M.2-RO-88 OutNo8 EMNoYesShow details8-outno8629noyes
M.2-IIRO-44 In & 4 OutYes4 EMYesYesShow details4-in-4-outyes4629yesyes
M.2-II-44 InYesYesYesShow details4-inyes570629yesyes
M.2-II-88 InYesYesYesShow details8-inyes570629yesyes
M.2-II-1616 InYesYesYesShow details16-inyes570629yesyes
M.2-IDIO-88 In & 8 OutYes8 SSYesYesShow details8-in-8-outyes8-ss629yesyes
M.2-IDO-88 OutNo8 SSNoYesShow details8-outno8-ss629noyes
M.2-IDIO-44 In & 4 OutYes4 SSYesYesShow details4-in-4-outyes4-ss629yesyes

Relays (Electromechanical (EM) and Solid-State (FET)) Outputs and Isolated Inputs on PCI

ModelDigital I/OOPTOsRelayCountersCOSXThf:att:pa_digital-i-ohf:att:pa_optoshf:att:pa_relayhf:att:pa_countershf:att:pa_coshf:att:pa_xt
PCI-IIRO-88 In & 8 OutYes8 EMYesYesShow details8-in-8-outyes8629yesyes
PCI-IIRO-1616 In & 16 OutYes16 EMYesYesShow details16-in-16-outyes16629yesyes
PCI-IDO-16A16 OutYes16 SSYesShow details16-outyes16-ss629571yes
PCI-IDO-32A32 OutYes32 SSYesShow details32-outyes32-ss629571yes
PCI-IDO-48A48 OutYes48 SSYesShow details48-outyes48-ss629571yes
PCI-IDO-3232 OutYes32 SSYesShow details32-outyes32-ss629571yes
PCI-IDO-4848 OutYes48 SSYesShow details48-outyes48-ss629571yes
PCI-IDO-1616 OutYes16 SSYesShow details16-outyes16-ss629571yes
PCI-IDIO-1616 In & 16 OutYes16 SSYesShow details16-in-16-outyes16-ss629571yes
PCI-IDI-32A32 InYesNoShow details32-inyes570629571no
PCI-IDI-32B32 InYesNoShow details32-inyes570629571no
PCI-IDI-32AC32 InYesYesNoShow details32-inyes570629yesno
PCI-IDI-32BC32 InYesYesNoShow details32-inyes570629yesno
PCI-IDI-48A48 InYesNoShow details48-inyes570629571no
PCI-IDI-48B48 InYesNoShow details48-inyes570629571no
PCI-IDI-48AC48 InYesYesNoShow details48-inyes570629yesno
PCI-IDI-48BC48 InYesYesNoShow details48-inyes570629yesno
PCI-IDI-16A16 InYesNoShow details16-inyes570629571no
PCI-IDI-16B16 InYesNoShow details16-inyes570629571no
PCI-IDI-16AC16 InYesYesNoShow details16-inyes570629yesno
PCI-IDI-16BC16 InYesYesNoShow details16-inyes570629yesno
LPCI-IIRO-88 In & 8 OutYes8 EMYesYesShow details8-in-8-outyes8629yesyes

Relays (Electromechanical (EM) and Solid-State (FET)) Outputs and Isolated Inputs on PC/104

ModelDigital I/OOPTOsRelayCountersCOSXThf:att:pa_digital-i-ohf:att:pa_optoshf:att:pa_relayhf:att:pa_countershf:att:pa_coshf:att:pa_xt
104-IIRO-88 In & 8 OutYes8 EMYesYesShow details8-in-8-outyes8629yesyes
104-IIRO-8E8 In & 8 OutYes8 EMNoYesShow details8-in-8-outyes8629noyes
104-IIRO-1616 In & 16 OutYes16 EMYesNoShow details16-in-16-outyes16629yesno
104-IIRO-16E16 In & 16 OutYes16 EMNoNoShow details16-in-16-outyes16629nono
104-RO-1616 OutYes16 EMNoNoShow details16-outyes16629nono
104-II32-4RO32 In & 4 OutYes4 EMYesYesShow details32-in-4-outyes4629yesyes
104-IDIO-1616 In & 16 OutYes16 SSYesYesShow details16-in-16-outyes16-ss629yesyes
104-IDIO-16E16 In & 16 OutYes16 SSNoYesShow details16-in-16-outyes16-ss629noyes
104-IDO-1616 OutYes16 SSNoYesShow details16-outyes16-ss629noyes
104-II-1616 InYesYesYesShow details16-inyes570629yesyes
104-IDO-88 OutYes8 SSNoYesShow details8-outyes8-ss629noyes
104-IDIO-88 In & 8 OutYes8 SSYesYesShow details8-in-8-outyes8-ss629yesyes
104-IDIO-8E8 In & 8 OutYes8 SSNoYesShow details8-in-8-outyes8-ss629noyes

Relays (Electromechanical (EM) and Solid-State (FET)) Outputs and Isolated Inputs on Wireless

ModelDigital I/OOPTOsRelayCountersCOSXThf:att:pa_digital-i-ohf:att:pa_optoshf:att:pa_relayhf:att:pa_countershf:att:pa_coshf:att:pa_xt
WWP-IIRO-8Show details
WM-IIRO-8Show details

Relays (Electromechanical (EM) and Solid-State (FET)) Outputs and Isolated Inputs on REMOTE ACCES

ModelDigital I/OOPTOsRelayCountersCOSXThf:att:pa_digital-i-ohf:att:pa_optoshf:att:pa_relayhf:att:pa_countershf:att:pa_coshf:att:pa_xt
WWP-IIRO-8Show details
WM-IIRO-8Show details