Case color: Black.
Control output: Current output.
Control mode *1: Standard or heating/cooling.
No. of auxiliary outputs: 1.
Detection of heater burnout, SSR failure, and heater overcurrent: --.
No. of event inputs: --.
Transfer output *2: Transfer output using control output.
Communi cations: RS-485 OMRON 41164 L303-20.
Previous model: Thermocouple input, --;
Resistance thermometer input, --.
New 48 x 24-mm Basic Temperature,
Controller with Enhanced Functions and,
Performance 41164 L303-20 Improved Indication Accuracy,
and Preventive Maintenance Function.
Indication Accuracy.
Thermocouple input: ±0.3% of PV (previous models: ±0 OMRON 41164 L303-20. 5%),
Pt input: ±0.2% of PV (previous models: ±0.5%),
Analog input: ±0.2% FS (previous models: ±0 . 5%),
Models are available with screw terminal blocks or screwless,
clamp terminal blocks.
A PV/SV-status display function can be set to automatically alternate,
between displaying the status of the Temperature Controller (auto/
manual, RUN/STOP, and alarms) and the PV or SV.
Preventive maintenance for relays in the Temperature,
Controller using a Control Output ON/OFF Counter OMRON 41164 L303-20.
Switch the PV display between three colors.
Compatible with Support Software (CX-Thermo version 4.2 or higher).
Eleven-segment displays.
Models are available with one or two alarm outputs. Output: SPDT.
Lighting: LED (with built-in reduced-voltage lighting function).
Operating voltage: 100/110 VAC/VDC.
Pushbutton colorsymbol: R: red, Y: yellow; PY: pure yellow
G: green, A: blue; W: white; PW: pure white.
Item: Alternate operation (Self-holding).
Separate Construction with.
Cylindrical 16-dia. Body.
Miniature design of 28.5 mm, the smallest class in the industry.
Detachable Switch.
The same contacts can be used for both standard loads and microloads.
Easy-to-wire terminal arrangement.
Certified for EN 60947-5-1. Category: standard.
Contacct form: 4DPDT .

Structure: insert / solder terminal 41164 L303-20.
Indicator: no light.
Note: when the order is ordered, the number of the models is added with the rated voltage of the coil.
For example: AC6V AC6V, MY2-J on behalf of the rated voltage of thee ccoil 41164 L303-20.
Upgraded version of the small power relay, there are a variety of models, suitable for a variety of sequential control and power applications.
41164 L303-20 Operation manual/Instructions/Model selection sample download link: /searchDownload.html?Search=41164 L303-20&select=5