System Sensor P2R Current Draw mA, Horn Selection for P, PC, & H series models, Horn Patterns

Candela Selection for P, S, PC, & SC series models

For strobe candela selection, adjust the slide switch located on the rear of the product while watching the viewing win- dow under the reflector on the front of the unit. Use Table 1 to determine current draw at various candela settings. Table 2 can be used to derate the candela rating for low temperature operation. Tables 3 & 4 can be used to deter- mine strobe light output at various viewing angles.

NOTE: SpectrAlert products set at 15 and 15/75 candela au- tomatically work on either 12V or 24V power supplies. The products are not listed for 12V operating voltages when set to any other candela settings.

Table 1. Current Draw (mA)

		8–17.5 Volts		16–33 Volts
	Candela	DC	FWR	DC	FWR
Strobe	15	123	128	66	71
(Standard	15/75	142	148	77	81
Candela	30	NA	NA	94	96
Range)	75	NA	NA	158	153
	95	NA	NA	181	176
	110	NA	NA	202	195
	115	NA	NA	210	205
Strobe	135	NA	NA	228	207
(High	150	NA	NA	246	220
Candela	177	NA	NA	281	251
Range)	185	NA	NA	286	258

Table 2.

Listed candela rating	Candela rating at –40°F
15 cd
15/75 cd	See Note
30 cd
75 cd	9.8
95 cd	16.2
110 cd	29.7
115 cd	41.4
135 cd	44.6
150 cd	49.5
177 cd	81.4
185 cd	72.2

NOTE: The 15, 15/75, and 30 cd settings are not intended for use at temperatures below 32°F.

Table 3. Horizontal Plane Light Distribution for Wall and Ceiling Applications

Horizontal Angle	% of rated light output
0	100
45	75
90	25

Table 4. Vertical Plane Light Distribution for Wall Applications

Vertical Angle	% of rated light output
0	100
45	34
90	12

Horn Selection for P, PC, & H series models

Horn setting selection is accomplished by using the rotary switch on the back of the product (see Table 5). The current draw for various horn settings for horn and 4-wire horn/ strobe products is listed in Table 6. The current draw for various horn and candela settings for 2-wire horn/strobe products (P2 series) is shown in Table 7 & 8. The sound measurements for various horn settings are shown in Table 9 for horn and horn/strobe products.

Table 5. Horn Patterns

Setting	Repetition Rate	dB Out
1	Temporal horn	High
2	Temporal horn	Medium
3	Temporal horn	Low
4	Normal horn	High
5	Normal horn	Medium
6	Normal horn	Low
7	Externally coded	High
8	Externally coded	Medium
9	Externally coded	Low

NOTE: In positions 7, 8, and 9, temporal coding must be provided by the NAC. If the NAC voltage is held constant, the horn output will remain constantly on. Positions 7, 8, and 9 are not available on 2-wire horn/strobe products.

Table 6. Horn Current Draw (mA)

		8–17.5 Volts		16–33 Volts
Sound Pattern	dB	DC	FWR	DC	FWR
Temporal	High	57	55	69	75
Temporal	Medium	44	49	58	69
Temporal	Low	38	44	44	48
Non-temporal	High	57	56	69	75
Non-temporal	Medium	42	50	60	69
Non-temporal	Low	41	44	50	50
Coded	High	57	55	69	75
Coded	Medium	44	51	56	69
Coded	Low	40	46	52	50

NOTE: Ceiling products have their maximum brightness on the two axes shown below.

A0351-00

D690-03-00 2 I56-2769-003R