Able to control up to 32, 64 or 256 remote outputs, all of which are programmable
Built-in relays can be used to indicate the system status remotely or provide control of auxiliary equipment
Modbus RTU output for connection to Building Management Systems (BMS)
Event log functions
Optional battery back up

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Details

Specifications

	Hydra₃₂	Hydra₂₅₆	Hydra+
Size	486W x 288H x 148D mm (19.1x11.3x5.8 ins)	430W x 405H x 140D mm (16.9x16x5.5 ins)	100W x 180H x 65D mm (3.9x7x2.5 ins)
Weight	3.8Kg (8.4lbs)	7.9Kg (17.4lbs)	0.4kg (0.9lbs)
Enclosure material	ABS	Painted steel	Painted alloy
Ingress protection	IP65	N/A	IP55
Operating temperature	0 to +55°C (32 to 131°F)		-10 to +55°C (14 to 131°F)
Storage temperature	-20 to +60°C (-4 to 140°F)
Humidity	15-85%RH non-condensing		20-90%RH non-condensing (RH @40°C)
Battery back-up	2 x 12V 7Ah lead-acid batteries (optional)	2 x 12V 7Ah lead-acid batteries (optional)	N/A
Inputs	1-32 addressable Hydra+ gas detectors (RS-485, maximum cable length 1Km typically)	Up to 256 addressable Hydra+ gas detectors. Two RS-485 buses supplied (max. 128 detectors), two extra buses may be added	N/A
Outputs	3 x alarm relays (alarm level 1,2,3) 1 x fault relay All relays are single-pole changeover (SPCO) with contacts rated 1A 24Vdc.	3 x alarm relays (alarm level 1,2,3) 1 x fault relay 1 x power fail relay 1 x battery relay 1 x sounder relay 1 x test relaySPCO contacts rated 16A 230Vac	RS-485 Modbus
Addressable output modules	One or two 16-way modules can be connected to provide up to 32 additional open-collector type outputs, or up to 32 SPCO relays when used with 8-way relay modules.	One to four 16-way modules can be connected per RS-485 bus to provide up to 64 additional open-collector outputs, or up to 64 SPCO relays when used with 8-way relay modules. 256 outputs maximum	N/A
	Relays can be energised/de-energised, latched/non-latched, time-delayed, pulsed. Contacts rated 16A 230Vac
Digital communications	RS-485 Modbus communication to BMS/DCS/PLC systems. System configuration software and PC lead/converter supplied.	RS-232 port for system configuration via a PC (software and lead supplied), or for Modbus communication to BMS/DCS/PLC systems.	N/A
Event logging	Up to 1000 alarm, power, fault, system events are stored in NVM.	Up to 1000 alarm, power, fault, system events are stored in NVM and on SD card.	N/A
Panel indication	OLED text display, 96 x 64 pixels LED’s: 6 x red Alarm (alarm level 1,2,3) 2 x yellow Fault 2 x green TX/RX Piezo sounder	Graphic LCD LED’s: 6 x red Alarm (alarm level 1,2,3) 2 x yellow Fault 2 x yellow Over-range 2 x yellow Under-range 2 x green Power/battery 2 x yellow Inhibit/test	N/A
Gases and ranges			CO: 0-300ppm NO₂ : 0-20ppm LPG/Propane: 0-100% LEL
Sensor life			4 years typical
Approvals	EMC: EN50270, EN61000-6-3: 2001 + A11 (2004), FCC CFR 47 Part 15, ICES-002	EMC: EN50270, EN61000-6-3: 2001 + A11 (2004)	N/A