Honeywell SN0500 manual Connections AT a Glance

		GAS LEAK DETECTOR INSTALLATION & USER GUIDE
		8. CONNECTIONS AT A GLANCE
Connector	Pin	Description
CON1	1	0V Supply Voltage.
CON1	2	24V Supply Voltage.
CON1	3	Earth.
CON2	1	Display Connection – not used.
CON2	2	Display Connection – not used.
CON2	3	Display Connection – not used.
CON2	4	Display Connection – not used.
CON2	5	Display Connection – not used.
CON2	6	Display Connection – not used.
CON2	7	Display Connection – not used.
CON2	8	Display Connection – not used.
CON2	9	Display Connection – not used.
CON2	10	Display Connection – not used.
CON3	1	Analogue Output – 0V.
CON3	2	Analogue Output – 4-20mA, load resistance <400Ω.
CON3	3	Analogue Output – 0-10V, load resistance >100Ω.
CON3	4	Analogue Output – 0-5V, load resistance>10KΩ.
CON4	1	Plug-in detection sensor module.
CON4	2	Plug-in detection sensor module.
CON4	3	Plug-in detection sensor module.
CON4	4	Plug-in detection sensor module.
CON4	5	Plug-in detection sensor module.
CON4	6	Plug-in detection sensor module.
CON5	1	RS485 Communication – A.
CON5	2	RS485 Communication – B.
CON5	3	RS485 Communication – Screen.
CON6	1	NO relay contact.
CON6	2	NO relay contact.
CON7	1	NO relay contact.
CON7	2	NO relay contact.

7 EN1B-0014UK07 R0404