3825 Ohio Avenue • St. Charles, IL 60174

Phone: 800-SENSOR2 • Fax: 630-377-6495

©2007 System Sensor.

Product specifications subject to change without notice. Visit systemsensor.com for

current product information, including the latest version of this data sheet.

A05-0379-001 • 5/07 • #1735

Simple Voltage and Power Selection

Example: Selecting a 1 ⁄4 watt input when a 25.0 volt (nominal)

amplifier is being used.

Ordering Information

Part No.

Description

Speaker Voltage

SP201K

Red, square speaker, 413/16˝ grille, 1⁄4–2 watt power tap,

includes surface mount backbox

25.0/70.7 Vrms

SP201K Series Specifications

Architectural/Engineering Specifications

Speaker shall be a System Sensor Model SP201K dual voltage transformer speaker capable of operating at 25.0 or 70.7 nominal Vrms. Speaker shall be listed

to Underwriter’s Laboratories Standard S4048 for outdoor fire protective signaling systems. Speaker shall have a frequency range of 400 to 4000 Hz and shall

have an operating temperature from –40°F to 150.8°F. Speaker shall have power taps which are selected by shunts. The speaker must be installed with its

weatherproof backbox in order to remain outdoor approved per UL listing S4048. The speaker shall be suitable for use in air handling spaces, as well as wet

environments.

Mechanical Specifications

Speaker Size

4 inches (101 mm)

Grille Size

413/16˝ (122 mm) square

Back Box

65/8˝ × 51⁄4˝ × 4˝ (168 mm × 133 mm × 102 mm)

Operating Temperature Range

–40°F to 150.8°F (–40°C to 66°C)

Electrical Specifications

Input Terminals

12 to 18 AWG

Voltage Input

25.0 volts or 70.7 volts nominal

Power

1⁄4, 1⁄2, 1, and 2 watts

Frequency Range

400 to 4000 Hz

The SP201K Series is UL Listed from 400 to 4000 Hz, but will provide an output from 100 to 10,000 Hz.

Sound Levels for Each Transformer Power Tap

Input Volts

2 W

1 W

1/2 W

1/4 W

UL

Reverberant

(dBA @ 10 ft.)

25.0

89

87

85

81

70.7

90

87

84

81

25.0 V

70.7 V

2 W

1 W

1

1

Conduit

Entrance

Outdoor

Back

Box

SP201K Mounting