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Tamper Switch for OS&Y Valves by System Sensor
Tamper Switch for OSY Valve (System Sensor OSY2) | Horizontal

Tamper Switch for OS&Y Valves by System Sensor

Your Price:$86.95
Part Number:OSYSWI
Part Number Listings Availability
OSYSWI UL, ULC, FM, MEA  Ships within 48 hours

Product Details

System Sensor's OSY2 Supervisory Switch is used to monitor the open position of an Outside Screw and Yok (OS&Y) type gate valve. Featuring robust construction, the OSY2 is designed for indoor or outdoor use. It can be used on nearly any OS&Y valve ranging from 1" to 12" (1 inch to 12 inch) in size. Installation is simple with its single side conduit entrance. No right angle fittings are necessary.

Comes standard with tamper resistant cover screws to prevent unauthorized entry, mounting bracket, and detailed instructions.

This Tamper Switch works with any brand of OS&Y valve! 

Not what you're looking for? See our full selection of Fire Protection System Tamper Switches.

Tamper Switch OSY2 Specifications:

Physical SpecificationsOperating Specifications

Overall Switch Dimensions

5 3/4" H x 3 1/2" W x 3 1/4" D
(14.6 cm x 8.9 cm x 8.2 cm)

Contact Ratings

Two sets of SPDT (Form C)
10.0 A @ 125/250VAC; 2.5 @ 6/12/24VDC

Shipping Weight

2.8 lbs (1.3 kg)

Enclosure Ratings

UL indoor/outdoor
NEMA 3R when mounted with the actuator vertical

Operating Temp Range

32ï¾°F to 120ï¾°F (0ï¾°C to 49ï¾°C)
Note: The OSY2 will operate from -40ï¾°F to 120ï¾°F (-40ï¾°C to 49ï¾°C); however, UL does not test control valve supervisory switches below 32ï¾°F.

Cover Tamper Switch


Maximum Stern Extension

2 3/8" (6.7cm)

Service Use

Automatic Sprinkler: NFPA 13
One or Two Family Dwelling: NFPA 13D
Residential Occupancies up to 4 stories: NFPA 13R
National Fire Alarm code: NFPA 72

Bracket Span

1/4"H x 6 3/4"W x 1"D
(5.7cm x 17.1cm x 2.5cm)


3 Years

Conduit Entrances

One single side open for 1/2" conduit

US Patent Nos

5,478,038; 5,213,205

More information about the OSY2 Tamper Switch:

Data Sheet

Product Manual

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