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Specifications

Case:

Polycarbonate

Contact Rating:

10 A

Coil Circuit Resistance:

339 ohms ± 10% 12 Volt
678 ohms ± 10% 24 Volt

Minimum Latch Voltage:

12 Volt model: 

10 VDC

24 Volt model: 

20 VDC

Minimum Latch Current:

12 Volt model: 

30 mA

24 Volt model: 

30 mA

Operating Temperature Range:

-40 to 176°F (-40 to 80°C)

Installation and Operation of the
518PH, 518APH & 518E TATTLETALE

®

00-02-0187 

Revised 10-06

Section 25

WARNING

BEFORE BEGINNING INSTALLATION OF THIS MURPHY PRODUCT

Disconnect all electrical power to the machine.

Make sure the machine cannot operate during installation.

Follow all safety warnings of the machine manufacturer.

Read and follow all installation instructions.

Please read the following information before installing

.  

A visual inspection of this product for damage during shipping is 

recommended before mounting. It is your responsibility to have a qualified person install this unit.

GENERAL INFORMATION

2-5/16 in.

(59 mm)

2-5/8 in.

(67 mm)

2-15/32 in.

(63 mm)

Applies to 518APH model.

9/16 in.

(14 mm)

13/16 in.
(21 mm)

Panel

Lockwasher

Hex 

Nut

Instruction
Plate

TATTLETALE

®

25/64 in.

(10 mm) dia

1/4 in.

(6 mm) dia

Mounting Holes

Installation

Dimensions and Installation 

“Loop Circuit” Wire Length in Miles @ 77°F (25°C)

Resistance in Ohms

Maximum recommended Loop Circuit resistance 
for proper operation of TATTLETALE

®

.

CAUTION:

Certain dangers to human safety and to equipment may occur if some equipment is stopped without pre-warning. It is recommended

that monitored functions be limited to alarm only or to alarm before shutdown. 

00-02-0187 page 1 of 2

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