Number of beams: 12. 
Protective height: 270mm. 
Model: PNP. 
Easy-to-use Safety Sensor Ideal for. 
Simple On/Off Detection Applications. 
Provides simple safety functions - saving TCO. 
by reducing errors. 
Simple wiring with only 4 wires. 
Fast response time of 5 ms. Size: 48 x 96mm.
Ontology: terminal type, analog input type  OMRON A-20GQ21.  
Category: control output 1 point type (power supply AC100 ~ 240V).
Shell color: black 
A-20GQ21
Control output: current output.
Control mode: standard or heating cooling.
Auxiliary output points: 3 points.
A power supply for the detection of /ES1B fault, SSR fault and heater over current for heater use.
Event entry point: 4 OMRON A-20GQ21. 
Transfer output: output (special terminal).
Communication: - . 
The general temperature controller 96mm, 48 * 96mm square has been upgraded to improve the performance and function of /.
Indicates that the accuracy of the upgrade, increase the function of prevention and maintenance, further enhance the performance.
Add PV/SV state display function, to see the state of the thermostat
(automatic / manual, RUN/STOP, alarm), interactive display PV/SV  OMRON A-20GQ21.  
Increase the number of control output ON/OFF counting function, can prevent the maintenance of temperature controller internal relay.
Increased the 3 segment display, which can display the current value / target / operation.
Increased the PF key, the distribution of automatic / manual, RUN/STOP, etc., can be a key operation. Classification: Standard. 
Contact gap: G (0.5 mm). 
Actuator: Hinge lever; Low OP. 
Best-selling Basic Switch Boasting. 
High Precision and Wide Variety. 
A large switching capacity of 15 A with high repeat accuracy. 
A wide range of variations in contact form for your selection: basic, 
split-contact, maintained-contact, and adjustable contact gap types. 
A series of standard models for micro loads is available. 
A series of molded terminal-type models incorporating safety, 
terminal protective cover is available. Appearance: Round/Projection type LED voltage-reduction lighting, 
(without Voltage Reduction Unit)A22L-T. 
Output: SPST-NO. 
Lighting: LED. 
Operating voltage: 100 VAC. 
Operation: Momentary operation (self-resetting). 
Illumination color: R (red); Y (yellow); G (green); W (white); A (blue). 
Install in 22-dia. or 25-dia. Panel Cutout. 
(When Using a Ring). 
Lever for easily  mounting andd removing the Switch Unit  A-20GQ21. 
Increase wiring efficiency with three-row mounting of Switch Blocks. 
Finger protection mechanism on Switch Unit provided as a standard feature. 
Use 25-dia. ring to install in 25-dia. panel cutouts. 
Mounteed  using either open-type (fork-type) or closed-type  A-20GQ21.   
(round-type) crimp terminals. 
IP65 oil resistance (non-lighted models). 
IP65 (lighted models). 
A-20GQ21 Operation manual/Instructions/Model selection sample download link: 
/searchDownload.html?Search=A-20GQ21&select=5