For 24 Vdc Operation; Wiring For Remote Tone Activation - Federal Signal SST3-MV Mode D'emploi

For 24 Vdc Operation

To connect 24 Vdc power to the siren:
1.
Make operating power to the siren is off.
2. See Figure 4 on page 12. For 24 Vdc operation, remove
the short-wire jumper (installed in "Wiring for Single Tone
Activation on Power-Up" on page 14.)
3. Connect the positive lead to the (+) terminal and negative
lead to the (-) terminal of the four-position connector.

Wiring for Remote Tone Activation

Make sure operating power to the siren is off.
See Figure 1 on page 8. Apply a dry-contact closure at J4 plug
between the ground (GND) terminal and one of the tone (WAIL,
YELP, HORN) terminals.
Use 18 AWG shielded twisted-pair wires. Strip no more than
0.25 inch of wire insulation from the ends of leads to connect dry-
contact terminals for the remotely-located tone activation between
GND and WAIL, YELP, or the HORN terminal of four-position
connector plug supplied with siren. Make sure the lead insulation
is flush with the connector. If you using stranded wire, be sure that
there are no loose strands outside the connector plug that could
touch adjacent lead and cause a short. Plug the connector into the
receptacle J4 on the printed circuit board.
The selected tone plays when the siren is powered up and the
remote activation contacts are closed.
For proper operation of the remote activating circuit, the total loop
resistance of the GND wire plus the resistance of the tone terminal
wire plus the dry-contact resistance of the circuit should not
exceed 1000 ohms.
By connecting a dry set of contacts for each of the three tones, any
one tone can be activated by closing the appropriate contact:
Installation and Maintenance Instructions
Model SST3-MV Siren
13