Bosch Security D273TH

Four-Wire Smoke/Heat Sensor
Four-wire smoke detector with a 135°F (57°C) heat sensor.

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Condition: New

Brand: Bosch Security

Status: Discontinued

SKU: 50230

Manufacturer Part #: D273TH

Description

The D273 Family includes the following detector models:

Model	Description
D273	Four-wire
D273IS¹	Four-wire with an isolated 135°F (57°C) heat sensor and sounder
D273TH	Four-wire with 135°F (57°C) heat sensor
D273THC	Four-wire with 135°F (57°C) heat sensor and auxiliary relay
D273THCS¹	Four-wire with 135°F (57°C) heat sensor, auxiliary relay, and sounder
D273THE	Four-wire with 135°F (57°C) heat sensor and EOL relay
D273THR²	Four-wire with 135°F (57°C) heat sensor and trouble relay
D273THS¹	Four-wire with 135°F (57°C) heat sensor and sounder
D273THES¹	Four-wire with 135°F (57°C) heat sensor, sounder, and EOL relay

¹ Sounders produce 85 dB at 10 ft (3 m) ² The trouble relay indicates both Dirty Smoke Chamber and/or Power Loss conditions Each of the detector models is UL Listed and works with commercial fire protective signaling and household fire warning systems. Each model detects smoke particles produced during wood, paper, and fabric combustion.

Documents

Description

The D273 Family includes the following detector models:

Model	Description
D273	Four-wire
D273IS¹	Four-wire with an isolated 135°F (57°C) heat sensor and sounder
D273TH	Four-wire with 135°F (57°C) heat sensor
D273THC	Four-wire with 135°F (57°C) heat sensor and auxiliary relay
D273THCS¹	Four-wire with 135°F (57°C) heat sensor, auxiliary relay, and sounder
D273THE	Four-wire with 135°F (57°C) heat sensor and EOL relay
D273THR²	Four-wire with 135°F (57°C) heat sensor and trouble relay
D273THS¹	Four-wire with 135°F (57°C) heat sensor and sounder
D273THES¹	Four-wire with 135°F (57°C) heat sensor, sounder, and EOL relay

¹ Sounders produce 85 dB at 10 ft (3 m)
² The trouble relay indicates both Dirty Smoke Chamber and/or Power Loss conditions

Each of the detector models is UL Listed and works with commercial fire protective signaling and household fire warning systems. Each model detects smoke particles produced during wood, paper, and fabric combustion.

Additional information

Weight	0.2 lbs
Construction	ABS
Material Qualities	Fire Retardant, High Impact Resistance
Detection Method	Fixed Temperature, Photoelectric
Thermal Rating	135°F
Series	D273 Series: Photoelectric Smoke and Heat Detectors
Condition	New
Brand	Bosch Security
Production Status	Discontinued

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Attributes

Weight	0.2 lbs
Construction	ABS
Material Qualities	Fire Retardant, High Impact Resistance
Detection Method	Fixed Temperature, Photoelectric
Thermal Rating	135°F
Series	D273 Series: Photoelectric Smoke and Heat Detectors
Condition	New
Brand	Bosch Security
Production Status	Discontinued

Product Features

12 VDC or 24VDC input
Designed for commercial or residential use
Four-wire application
Light-emitting diodes (LEDs) indicate the status of the chamber, power, and alarm
Removable terminal block to simplify wiring connections

What's Included

Shipping Details

Pricing & Lead Times are based on details provided directly by the manufacturer, our network of distributors and based on historical lead times on any given product. This is the most up-to-date information we have currently. All orders are subject to 1 – 5 days of processing as the units must go through our product verification process at our main Shipping Hub in New York prior to being shipped out to you. Depending on your circumstances, we can expedite this processing time for additional costs, but orders cannot be expedited unless they are currently in stock. PLEASE NOTE: Any and all pricing and availability are subject to change without notice being given to the client.

Return Details

Equipment must be returned within (30) days of the date it was shipped, or made ready for pickup. In order to initiate a return, you must contact our sales team via email at [email protected] to receive an RMA # if it meets all criteria. Products returned after (30) days from our shipment date will be refused. After RMA acceptance, any parts that are returned to FireAlarm.com are subject to a minimum 25% restocking fee. New parts must be returned with original packaging, in un-opened, and uninstalled condition. If not, these parts may be subject to increased restocking fees or refusal. Depending on the circumstances of your order, and if you are a long-time customer of FireAlarm.com, other arrangements can be made. See our complete return policy for more information at: https://firealarm.com/faq/

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