T91-1C 24V 30A General Purpose Relay24V 30A is a general purpose relay. Mostly, relays are used to perform switching operation without manual touch. It is used to control the flow of current. General purpose Relays are primarily used as a control circuit (relay sequence) for automated machinery employed at various industrial sites as well as for other control systems including lighting, air conditioning, and water treatment in buildings. Applications When galvanic isolation is desired,

This encoded data consists of 8 address bits and 4 data bits

with a variety of preset output voltages

2M ohm (1204) Brand Resistor Chip size 0805 Tolerance 1% Power 1/8W Temperature Range -55°C to +125°C Mounting Type Surface mount No

8 channel relay module

Gate-Threshold Voltage 3

of Channels 6

The signal leads (pins 5 through 8) are electrically insulated from the terminals of the conductive path

the ATtiny85 can be a good solution

Less susceptible to cracking and metal fatigue

the undue strain on the gauges can be avoided as the load cell warms up and cools down

5V  Technology Alkaline Operating Temperature -30 °C to 60 °C Capacity (mAh) 150  Diameter 11

So this IC basically has an IR (infrared) LED and a photo-transistor inside it