Smart Relays with Universal Inputs 8-Layer Stackable HAT for Raspberry Pi

The Smart Relays Card is ideal solution for mission critical projects where you have to be 100% sure that your system works as expected. HALL effect sensors on relay outputs monitor the load current in real time. Not only you can be sure that your loads operate within specified parameters, but you can also measure the load power and you can limit the load current to any value from 1 to 10A. Four universal inputs can read temperatures from 10K thermistors, dry contact or opto-isolated 0-24V signals. Stackable to 8 layers, the Smart Relays Card can add up to 32 relays and 32 analog/digital inputs to each Raspberry Pi in a very compact form factor. Pluggable connectors make the card easy to use when multiple cards are stacked up. All relays have Normal Open and Normal Close contacts and can switch up to 10A/240VAC.

• Four relays with HALL effect sensors on loads
• Switch and measure AC/DC currents up to 10A and 250VAC
• Monitor load failure, compute load power, limit load current
• Four Analog inputs reading temperature from 10K thermistors, or Four Digital inputs reading dry contact or 24V opto-isolated signals
• Transition counters to 4kHz on all inputs; Input counters with cumulative or PPS (pulse per second) reading up to 4kHz
• 2 x Quadrature encoder inputs reading up to 4000 PPS
• PWM inputs on each channel, reading both the fill factor and the frequency
• Enhanced 24V power supply delivering up to 5A at 5V to Raspberry Pi
• Hardware watchdog power cycles the Pi on software lockup
• Eight layer stackable to 32 relays and 32 inputs; RS485/MODBUS port; Raspberry Pi reset push button