Knowledge Base
3D CAD Files

All voltages are measured with respect to the 0V power supply pin.

Operating limits

The unit may be damaged if operated outside these limits

Absolute Maximums
Ambient temperature range -10°C to 60°C
Supply voltage +9 to +28VDC
RTC Supply voltage+2.1 to +3.6VDC
Voltage applied to any digital I/O pin -0.3V to Vsupply
Output sink current, per digital I/O pin used as output 500mA
Output sink current, aggregate of all pins 2.4A
Voltage applied to analog input pins
0-10V mode 30V
0-3.3V mode10V
0-20mA mode 25mA
Thermistor mode 30V
Analog output current 30mA
Real time clock battery voltage 3.6V
DC electrical characteristics

Vsupply = 24V, Ambient temperature = 25°C unless otherwise noted.

Parameter ValueUnit
Supply current, Vsupply = 24V, display backlight at full intensity100 mA
Supply current, Vsupply = 24V, display backlight off60 mA
Supply current, Vsupply = 12V, display backlight at full intensity200 mA
Supply current, Vsupply = 12V, display backlight off120 mA
Analog input resolution12bits
Analog output resolution10bits
Analog input and output accuracy2%
Analog input resistance, 0-10V mode149.2
Analog input resistance, 0-3.3V mode1
Analog input burden resistance, 0-20mA mode165Ω
Analog output resistance100Ω
Digital output ON state resistance, output current = 500mA, temperature = full rated range300
Digital input current, Vin = 0V, Vsupply=24V (approximately=Vsupply/10,000)2.4mA
Digital input low voltage (voltage must be less than this to guarantee an “on” input)2V
Digital input high voltage (voltage must be more than this to guarantee an “off” input)4.6V
Realtime clock accuracy, seconds per month1 s/mo
Real time clock battery current, 3.0V battery9μA
Minimum real time clock battery voltage 2 V
 Display characteristics
Resolution480×272pixels
Colour depth16bits
Display brightness300nits
Contrast ratio350
Dimming range0 – 100%
Backlight lifetime @ full brightness (drop to 50%)20000 (min)hr
Flash storage for images and fonts8MB
 TTL Comm Ports
Maximum input voltage5.0Volts
Output Voltage3.3Volts
Maximum Data Rate115.2kBaud
RS485 Comm Port
Unit Load1
Unit load equivalent number of devices per network32
Maximum Data Rate115.2kBaud
Protection TVS diode breakdown voltage+6.8Volts