Bosch Appliances 3.5 manual 8: Press-to-talkPTT key, 10: Externally powered LED

2011-02 Installation and User Instructions 5 Call Stations

en 246

It is possible to connect the following to the control inputs/outputs connector:

• Press-to-talk (PTT) key. See figure 21.8 for a

connection diagram. The two resistors must be

placed in the circuit, because the contact is always

supervised by the system software.

• Internally powered lamp or LED. See figure 21.9 for

a connection diagram.

• Externally powered lamp or LED. See figure 21.10

for a connection diagram.

• Externally powered relay. See figure 21.11 for a

Output X, IN

GND

I < 100 mA

R

Max. 56V

connection diagram.

10 kΩ	PTT Input	10 kΩ
	Contact
5V
		10 kΩ
	GND

figure 21.8: Press-to-talk (PTT) key

figure 21.10: Externally powered LED

I < 100 mA

Max. 56V

Output X, IN

GND

figure 21.11: Externally powered relay

	+5V, 30 mA
	R	R		R	R	R
	3	5		7	9	11
	PI		FI	CI	SPI	SEI
	4	6		8	10	12
	62V	62V		62V	62V	62V
PI	= Power Indicator			R = 330 Ω
FI	= Fault Indicator
CI	= Call Indicator
SPI = System Priority Indicator
SEI = System Emergency Indicator

figure 21.9: Externally powered LED

Bosch Security Systems 2011-02