Overview
The Smart Multichannel Relay (SMR) is a 3-channel, versatile relay that can be controlled by a computer or operated independently on batteries. It is designed for applications requiring reliable physical switching of external circuits. The SMR provides true galvanic isolation using mechanical relays, ensuring superior signal integrity and safety. With its dual power options and multiple remote control methods, including a dedicated GUI, Python package, and universal serial commands, it is an ideal solution for a wide range of scientific development and commercial applications.
Features:
- Three Independent Channels: Provides simultaneous control over three separate devices or circuits.
- Dual Power Operation: Features ultra-low power consumption for long-term operation on AAA batteries or can be powered and controlled directly via USB-C.
- Full Galvanic Isolation: Utilizes mechanical relays to ensure a true physical air-gap disconnection, offering superior safety compared to solid-state solutions.
- Flexible Control Options: Can be operated manually, through a dedicated GUI software, a Python package for automation, or integrated into custom applications (LabVIEW, MATLAB, etc.) via simple serial commands.
- Flexible Multiplexer Configuration: Channels can be combined to create a larger 1-of-3 or 1-of-4 multiplexer for advanced switching applications.
- Plug-and-Play USB Control: Offers straightforward computer-based control and configuration through a standard USB interface.
Channels
Parameter |
Value |
Number of channels |
3 (2 x 1) |
Channel isolation |
Galvanic |
Input-signal frequency range |
(see Appendices) |
Maximum current |
0.5 A |
Maximum voltage |
30 V |
Contact resistance |
<200 mΩ |
Transmission
Frequency |
Value |
3 MHz |
-0.07 dB |
30 MHz |
-0.07 dB |
300 MHz |
-0.82 dB |
1.5 GHz |
-2.14 dB |
Isolation (A ↔ B)
Frequency |
Value |
3 MHz |
-90.0 dB |
30 MHz |
-71.6 dB |
300 MHz |
-48.3 dB |
1.5 GHz |
-12.6 dB |
Remote interface
Parameter |
Value |
Interface type |
USB |
General
Parameter |
Value |
Dimensions (L x W x H) |
80 x 170 x 35 mm |
Weight |
450 g |
Supply |
2 Lithium/Iron Disulfide (Li/FeS2) Batteries (1.8 V) or USB |
Operating temperature |
15-60°C |
Warranty |
One year parts and labor on defects in materials and workmanship |