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.

Isolated Digital: Inputs, Relays (Electromechanical and Solid-State (FET)) on PCI Express (PCIe)

ModelDigital I/ORelays/FETsCountersCOSXThf:att:pa_digital-i-ohf:att:pa_relayhf:att:pa_countershf:att:pa_coshf:att:pa_xt
PCIe-IDIO-2424 In & 24 Out24 FETsYesYesShow details24-in-24-out24-ss629yesyes
PCIe-IDIO-1212 In & 12 Out12 FETsYesYesShow details12-in-12-out12-ss629yesyes
PCIe-IDI-2424 InYesYesShow details24-in570629yesyes
PCIe-IDO-2424 Out24 FETsNoYesShow details24-out24-ss629noyes
PCIe-IIRO-1616 In & 16 Out16 EMYesYesShow details16-in-16-out16629yesyes
PCIe-IIRO-88 In & 8 Out8 EMYesYesShow details8-in-8-out8629yesyes

Isolated Digital: Inputs, Relays (Electromechanical and Solid-State (FET)) on USB

ModelDigital I/ORelays/FETsCountersCOSXThf:att:pa_digital-i-ohf:att:pa_relayhf:att:pa_countershf:att:pa_coshf:att:pa_xt
USB-DIO-96-OEM-IOB-96 Kit96 OutNoneNoneNoYesShow details96-outnonenonenoyes
USB-DIO-9696 I/O (8/8/4/4 ×4)NoneNoneNoYesShow details96-i-o-8-8-4-4-x4nonenonenoyes
USB-DIO-48-OEM-IOB-48 Kit48 OutYesShow details48-out570629571yes
USB-DIO-4848 I/O (8/8/4/4 ×2)YesShow details48-i-o-8-8-4-4-x2570629571yes
USB-DO2424 Out24 FETsNoneNoYesShow details24-out24-ssnonenoyes
USB-DIO24DO1224 I/O (8/8/4/4)12 FETsNoneNoYesShow details24-i-o-8-8-4-412-ssnonenoyes
USB-DIO48DO2448 I/O (8/8/4/4 ×2)24 FETsNoneNoYesShow details48-i-o-8-8-4-4-x224-ssnonenoyes
USB-II-1616 InNoneNoneNoYesShow details16-innonenonenoyes
USB-IIRO-44 In & 4 Out4 EMNoneNoYesShow details4-in-4-out4nonenoyes
USB-IIRO-88 In & 8 Out8 EMNoneNoYesShow details8-in-8-out8nonenoyes
USB-RO-1616 Out16 EMNoneNoYesShow details16-out16nonenoyes
USB-IIRO-1616 In & 16 Out16 EMNoneNoYesShow details16-in-16-out16nonenoyes
USB-IDIO-4L4 In & 4 Out4 FETs-LNoneNoYesShow details4-in-4-out4-ss-lnonenoyes
USB-IDIO-8L8 In & 8 Out8 FETs-LNoneNoYesShow details8-in-8-out8-ss-lnonenoyes
USB-IDO-16L16 Out16 FETs-LNoneNoYesShow details16-out16-ss-lnonenoyes
USB-IDIO-16L16 In & 16 Out16 FETs-LNoneNoYesShow details16-in-16-out16-ss-lnonenoyes
USB-IDO-1616 Out16 FETsNoneNoYesShow details16-out16-ssnonenoyes
USB-IDIO-1616 In & 16 Out16 FETsNoneNoYesShow details16-in-16-out16-ssnonenoyes
USB-IDIO-44 In & 4 Out4 FETsNoneNoYesShow details4-in-4-out4-ssnonenoyes
USB-IDIO-88 In & 8 Out8 FETsNoneNoYesShow details8-in-8-out8-ssnonenoyes
USB-IIRO4-2SM4 In & 4 Out4 EMNoneNoNoShow details4-in-4-out4nonenono
USB-COM-2SMNoneNoneNoNoShow details573nonenonenono
USB-IIRO-4DB4 In & 4 Out4 EMNoneNoNoShow details4-in-4-out4nonenono

Isolated Digital: Inputs, Relays (Electromechanical and Solid-State (FET)) on USB/104 or Embedded USB

ModelDigital I/ORelays/FETsCountersCOSXThf:att:pa_digital-i-ohf:att:pa_relayhf:att:pa_countershf:att:pa_coshf:att:pa_xt
USB-DIO-96-OEM-IOB-96 Kit96 OutNoneNoneNoYesShow details96-outnonenonenoyes
USB-DIO-9696 I/O (8/8/4/4 ×4)NoneNoneNoYesShow details96-i-o-8-8-4-4-x4nonenonenoyes
USB-DIO-48-OEM-IOB-48 Kit48 OutYesShow details48-out570629571yes
USB-DIO-4848 I/O (8/8/4/4 ×2)YesShow details48-i-o-8-8-4-4-x2570629571yes
IOB-4848 OutShow details48-out
IOB-9696 OutShow details96-out
USB-DO2424 Out24 FETsNoneNoYesShow details24-out24-ssnonenoyes
USB-DIO24DO1224 I/O (8/8/4/4)12 FETsNoneNoYesShow details24-i-o-8-8-4-412-ssnonenoyes
USB-DIO48DO2448 I/O (8/8/4/4 ×2)24 FETsNoneNoYesShow details48-i-o-8-8-4-4-x224-ssnonenoyes
USB-II-1616 InNoneNoneNoYesShow details16-innonenonenoyes
USB-IIRO-44 In & 4 Out4 EMNoneNoYesShow details4-in-4-out4nonenoyes
USB-IIRO-88 In & 8 Out8 EMNoneNoYesShow details8-in-8-out8nonenoyes
USB-RO-1616 Out16 EMNoneNoYesShow details16-out16nonenoyes
USB-IIRO-1616 In & 16 Out16 EMNoneNoYesShow details16-in-16-out16nonenoyes
USB-IDIO-4L4 In & 4 Out4 FETs-LNoneNoYesShow details4-in-4-out4-ss-lnonenoyes
USB-IDIO-8L8 In & 8 Out8 FETs-LNoneNoYesShow details8-in-8-out8-ss-lnonenoyes
USB-IDO-16L16 Out16 FETs-LNoneNoYesShow details16-out16-ss-lnonenoyes
USB-IDIO-16L16 In & 16 Out16 FETs-LNoneNoYesShow details16-in-16-out16-ss-lnonenoyes
USB-IDO-1616 Out16 FETsNoneNoYesShow details16-out16-ssnonenoyes
USB-IDIO-1616 In & 16 Out16 FETsNoneNoYesShow details16-in-16-out16-ssnonenoyes
USB-IDIO-44 In & 4 Out4 FETsNoneNoYesShow details4-in-4-out4-ssnonenoyes
USB-IDIO-88 In & 8 Out8 FETsNoneNoYesShow details8-in-8-out8-ssnonenoyes
USBP-II8IDO4A8 In & 4 Out4 FETsYesShow details8-in-4-out4-ss629571yes
USB-IIRO4-2SM4 In & 4 Out4 EMNoneNoNoShow details4-in-4-out4nonenono
USB-COM-2SMNoneNoneNoNoShow details573nonenonenono
USB-IIRO-4DB4 In & 4 Out4 EMNoneNoNoShow details4-in-4-out4nonenono
USB-II4-OEM4 InNoneNoYesShow details4-in570nonenoyes
USB-II8-OEM8 InNoneNoYesShow details8-in570nonenoyes
USB-II16-OEM16 InNoneNoYesShow details16-in570nonenoyes

Isolated Digital: Inputs, Relays (Electromechanical and Solid-State (FET)) on Ethernet

ModelDigital I/ORelays/FETsCountersCOSXThf:att:pa_digital-i-ohf:att:pa_relayhf:att:pa_countershf:att:pa_coshf:att:pa_xt
ETH-DIO-48-OEM-IOB-48 Kit48 OutYesShow details48-out570629571yes
ETH-DIO-2424 I/O (8/8/4/4)YesShow details24-i-o-8-8-4-4570629571yes
ETH-DIO-4848 I/O (8/8/4/4 ×2)YesShow details48-i-o-8-8-4-4-x2570629571yes
IOB-4848 OutShow details48-out
IOB-9696 OutShow details96-out
ETH-IIRO-1616 In & 16 Out16 EMYesShow details16-in-16-out16629571yes
ETH-IIRO-88 In & 8 Out8 EMYesShow details8-in-8-out8629571yes
ETH-IIRO-44 In & 4 Out4 EMYesShow details4-in-4-out4629571yes
ETH-II-1616 InYesShow details16-in570629571yes
ETH-RO-1616 Out16 EMYesShow details16-out16629571yes
ETH-IDIO-1616 In & 16 Out16 FETsYesShow details16-in-16-out16-ss629571yes
ETH-IDIO-88 In & 8 Out8 FETsYesShow details8-in-8-out8-ss629571yes
ETH-IDIO-44 In & 4 Out4 FETsYesShow details4-in-4-out4-ss629571yes
ETH-IDO-1616 Out16 FETsYesShow details16-out16-ss629571yes

Isolated Digital: Inputs, Relays (Electromechanical and Solid-State (FET)) on PCI Express Mini Card (mPCIe)

ModelDigital I/ORelays/FETsCountersCOSXThf:att:pa_digital-i-ohf:att:pa_relayhf:att:pa_countershf:att:pa_coshf:att:pa_xt
mPCIe-IIRO-44 In & 4 Out4 EMYesYesShow details4-in-4-out4629yesyes
mPCIe-RO-88 Out8 EMNoYesShow details8-out8629noyes
mPCIe-IIRO-88 In & 8 Out8 EMYesYesShow details8-in-8-out8629yesyes
mPCIe-IDIO-44 In & 4 Out4 FETsYesYesShow details4-in-4-out4-ss629yesyes
mPCIe-IDIO-88 In & 8 Out8 FETsYesYesShow details8-in-8-out8-ss629yesyes
mPCIe-IDO-88 Out8 FETsNoYesShow details8-out8-ss629noyes
mPCIe-II-44 InYesYesShow details4-in570629yesyes
mPCIe-II-88 InYesYesShow details8-in570629yesyes
mPCIe-II-1616 InYesYesShow details16-in570629yesyes
mPCIe-ISODIO-168 In & 8 Out, 3.3V signaling1 x 32 Bit Timer WatchdogYesYesShow details8-in-8-out-3-3v-signaling5701-x-32-bit-timer-watchdogyesyes

Isolated Digital: Inputs, Relays (Electromechanical and Solid-State (FET)) on M.2

ModelDigital I/ORelays/FETsCountersCOSXThf:att:pa_digital-i-ohf:att:pa_relayhf:att:pa_countershf:att:pa_coshf:att:pa_xt
M.2-IIRO-88 In & 8 Out8 EMYesYesShow details8-in-8-out8629yesyes
M.2-RO-88 Out8 EMNoYesShow details8-out8629noyes
M.2-IIRO-44 In & 4 Out4 EMYesYesShow details4-in-4-out4629yesyes
M.2-IDIO-88 In & 8 Out8 FETsYesYesShow details8-in-8-out8-ss629yesyes
M.2-IDO-88 Out8 FETsNoYesShow details8-out8-ss629noyes
M.2-IDIO-44 In & 4 Out4 FETsYesYesShow details4-in-4-out4-ss629yesyes
M.2-II-44 InYesYesShow details4-in570629yesyes
M.2-II-88 InYesYesShow details8-in570629yesyes
M.2-II-1616 InYesYesShow details16-in570629yesyes

Isolated Digital: Inputs, Relays (Electromechanical and Solid-State (FET)) on PCI

ModelDigital I/ORelays/FETsCountersCOSXThf:att:pa_digital-i-ohf:att:pa_relayhf:att:pa_countershf:att:pa_coshf:att:pa_xt
PCI-IIRO-88 In & 8 Out8 EMYesYesShow details8-in-8-out8629yesyes
PCI-IIRO-1616 In & 16 Out16 EMYesYesShow details16-in-16-out16629yesyes
LPCI-IIRO-88 In & 8 Out8 EMYesYesShow details8-in-8-out8629yesyes
PCI-IDI-32A32 InNoShow details32-in570629571no
PCI-IDI-32B32 InNoShow details32-in570629571no
PCI-IDI-32AC32 InYesNoShow details32-in570629yesno
PCI-IDI-32BC32 InYesNoShow details32-in570629yesno
PCI-IDI-48A48 InNoShow details48-in570629571no
PCI-IDI-48B48 InNoShow details48-in570629571no
PCI-IDI-48AC48 InYesNoShow details48-in570629yesno
PCI-IDI-48BC48 InYesNoShow details48-in570629yesno
PCI-IDI-16A16 InNoShow details16-in570629571no
PCI-IDI-16B16 InNoShow details16-in570629571no
PCI-IDI-16AC16 InYesNoShow details16-in570629yesno
PCI-IDI-16BC16 InYesNoShow details16-in570629yesno
PCI-IDO-32A32 Out32 FETsYesShow details32-out32-ss629571yes
PCI-IDO-48A48 Out48 FETsYesShow details48-out48-ss629571yes
PCI-IDO-16A16 Out16 FETsYesShow details16-out16-ss629571yes
PCI-IDO-3232 Out32 FETsYesShow details32-out32-ss629571yes
PCI-IDO-4848 Out48 FETsYesShow details48-out48-ss629571yes
PCI-IDO-1616 Out16 FETsYesShow details16-out16-ss629571yes
PCI-IDIO-1616 In & 16 Out16 FETsYesShow details16-in-16-out16-ss629571yes

Isolated Digital: Inputs, Relays (Electromechanical and Solid-State (FET)) on PC/104

ModelDigital I/ORelays/FETsCountersCOSXThf:att:pa_digital-i-ohf:att:pa_relayhf:att:pa_countershf:att:pa_coshf:att:pa_xt
104-IDIO-1616 In & 16 Out16 FETsYesYesShow details16-in-16-out16-ss629yesyes
104-IDIO-16E16 In & 16 Out16 FETsNoYesShow details16-in-16-out16-ss629noyes
104-IDO-1616 Out16 FETsNoYesShow details16-out16-ss629noyes
104-II-1616 InYesYesShow details16-in570629yesyes
104-IDO-88 Out8 FETsNoYesShow details8-out8-ss629noyes
104-IDIO-88 In & 8 Out8 FETsYesYesShow details8-in-8-out8-ss629yesyes
104-IDIO-8E8 In & 8 Out8 FETsNoYesShow details8-in-8-out8-ss629noyes
104-II32-4RO32 In & 4 Out4 EMYesYesShow details32-in-4-out4629yesyes
104-IIRO-1616 In & 16 Out16 EMYesNoShow details16-in-16-out16629yesno
104-IIRO-16E16 In & 16 Out16 EMNoNoShow details16-in-16-out16629nono
104-RO-1616 Out16 EMNoNoShow details16-out16629nono
104-IIRO-88 In & 8 Out8 EMYesYesShow details8-in-8-out8629yesyes
104-IIRO-8E8 In & 8 Out8 EMNoYesShow details8-in-8-out8629noyes

Isolated Digital: Inputs, Relays (Electromechanical and Solid-State (FET)) on Wireless

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

Isolated Digital: Inputs, Relays (Electromechanical and Solid-State (FET)) on REMOTE ACCES

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

Isolated Digital: Inputs, Relays (Electromechanical and Solid-State (FET)) on PC

ModelDigital I/ORelays/FETsCountersCOSXThf:att:pa_digital-i-ohf:att:pa_relayhf:att:pa_countershf:att:pa_coshf:att:pa_xt
IOB-4848 OutShow details48-out
IOB-9696 OutShow details96-out
ROB-24H – discontinued24 Form CShow details24-form-c
ROB-2424 Form CShow details24-form-c
IIB-2424 InShow details24-in