Market Application Guide

Industrial Control Panels- Audible & Visual Alarms


Mallory Sonalert panel mount alarms have been used in panel box applications since the product line was introduced 50 years ago.  Hundreds of models are available with voltages up to 250 Vac, various sound types, sound levels, & termination options.  Mallory’s ZT Series features a 22mm package with sound + LED light.  Mallory’s LSC Series features a 30mm package with extra loud sound and LED light.


22mm Hole Size , LED + Alarm, CSA (cUL), General Panel Box, High Voltage, PLC Compatible, CUL Recognized, Waterproof (UL-50; UL-508A; NEMA 3R, 4X, & 12; IP66; CSA), Hazardous Location (Class I Div II Groups A, B, C, & D)

Alarms to Use for These Applications

General Any ZA, ZT, SC, SCE, SCL, SNP, or LSC Series models
UL & cUL Any ZA Series, any ZT Series, any SCE Series, and many SC Series models. See UL and cUL yellow cards for model list.
Terminal Block ZA Series, ZT Series, or SCE Series
Waterproof Any ZA or ZT Series model. Use accessory rubber gasket P/N ACC03 with any SC or SCE series panel mount model. UL & cUL yellow cards show approvals to Type 4X (NEMA 4X).
Snap-in SNP2R, SNP428R, SNP428FR
LED & Alarm Any ZT or LSC Series Model
22mm Hole Size Any ZA or ZT Series model. PK-20A35EWQ, PF-20A35EWQ
Tamper-Proof Any ZA or ZT Series model. PK-27N35ERQ, PK-27A35ERQ
Hazardous Location Class I Div II Any SCH Series model (SCH628R, SCH110R, SCH250R, etc.)

Accessories to Consider for SC & SCE Series

ACC01 (Metal “L” Bracket), ACC03 (NEMA Gasket), SCVC (volume control)

Other Capabilities

Custom Voltage Ranges, Custom Temperature Ranges, Environmental Testing, Custom Cable Assemblies, Custom Terminations

ZA & ZT Panel Series

22 mm w/Terminal Block

SC Panel Series

Screw Terminals

SCE & SCL Panel Series

Terminal Block

SNP Panel Series


SCH Panel Series

Class I Div II

PK-27N35ERQ; PK-27A35ERQ


PK-20A35EWQ, PF-20A35EWQ

22 mm w/Wires

Call 317-612-1000 or contact us for more details