WS4936 - DSC Wireless Combo Smoke/Heat Detector

Please Note: The DSC WS4936 wireless combo smoke/heat detector has been discontinued without replacement.

Description
Specifications
PDF Documents
LED Indicators
Mounting
Compatible

DSC WS4936 Product Description:

The DSC WS4916 s a wireless photoelectric smoke detector with a fixed temperature threshold, a rate of rise heat detector and an internal piezoelectric alarm. The WS4916 is low-profile wireless smoke detector that is ideal for difficult to-wire residential or commercial applications.

Compatible with all DSC 433 MHz wireless receivers, the WS4936 features a built-in alarm horn, integral dual-sensor heat detection, automatic drift compensation, and an easy-maintenance removable smoke chamber. With no wires to run, installers are able to save time and move more quickly through the installation process. All the WS4936 requires for installation is a screwdriver and any DSC 433 MHz wireless receiver.

DSC is committed to reducing false alarms and has integrated a number of features into the WS4936 to provide reliable detection. One important feature is drift compensation. It provides a constant level of sensitivity performance for extended operation. As dust accumulates in a detector it adjusts to maintain the original factory-set sensitivity, thereby minimizing the potential for false alarms. If the detector reaches its limit of compensation, it will indicate a trouble condition well before the sensitivity increases to a level where false alarms will be generated.

The smoke detector will go into alarm when the signal level exceeds the "alarm" threshold and automatically restore when the signal level falls below the alarm "restore" threshold. During an alarm the LED will flash 1/second and the sounder will sound the evacuation temporal pattern.

The heat detector (cULus versions only) will go into alarm when the heat signal level exceeds the heat alarm threshold (135®F/57®C); and will automatically restore when the heat signal level falls below the heat alarm threshold (restore). The detector will also go into heat alarm if there is a rapid increase in the temperature over a short period of time. During an alarm the LED will flash 1/second and the sounder will sound the evacuation temporal pattern. The smoke detector will go into alarm when the signal level exceeds the "alarm" threshold and automatically restore when the signal level falls below the alarm "restore" threshold. During an alarm the LED will flash 1/second and the sounder will sound the evacuation temporal pattern.

The WS4936 has built-in tamper protection and the removal of the detector from the mounting plate initiates a "tamper" transmission. The tamper condition is restored after the detector is mounted on the plate. A supervisory message is transmitted to the control panel at 64-minute intervals for the WS4936 and 12-minute intervals for the WS4936EU/WS8936 models. If the signal is not received the control panel determines that the detector is missing.

Product Features:

Automatic drift compensation
Built-in, dual-sensor heat detector
Built-in 85dB horn
Local test button
Low profile design
High/low sensitivity reporting
Hush button
Low battery indication
Easy maintenance removable smoke chamber
3 AAA batteries included
UL/ULC Residential Fire
Compatible with all DSC 433 MHz wireless receivers
Backed by DSC's 1-year limited manufacturer's warranty

DSC WS4936 Product Specifications:

Diameter (base): 5" in (125 mm)
Height (including base): 2.5" in (63 mm)
Weight (including battery): 8.75 oz (243g)
Color: White
Spacing rating: 70 ft (21.3 m)
Alarm Sensitivity (threshold): 1.26 - 2.39%/ foot obscuration
Audible Signal (ANSI Temporal 3): 85dBA min. in alarm
Sounder Alarm Pattern: Evacuation Temporal Pattern
Operating Temperature: 40° to 100°F (4.4° to 37.8°C)
Operating Temperature with Heat Detector: 32° to 100°F (0° to 37.8°C)
Heat Alarm: 135°F (57°C)
Humidity: 15 to 95% RH, non-condensing
Approved Batteries: 3 AAA Duracell Procell PC2400 or Energizer E92
Alarm Silencing: 8 minutes automatically resettable
Supervisory Transmission Frequency: 64 min. intervals
Low Battery Detection: Low battery 14 days remaining

DSC WS4936 Product Documents:

• DSC WS4936 Wireless Smoke Detector with Heat Detection - Product Datasheet
• DSC WS4936 Wireless Smoke Detector with Heat Detection - Installation and Operations Guide

DSC WS4936 Product LED Indicators:

Smoke Alarm: Red flash every second
Smoke Test: Red flash every second
Test Alarm: Red flash every second
Detector Trouble: Yellow flash every 4 seconds
Low Battery: Yellow flash every 12 seconds
Detector Dirty: Yellow flash every 8 seconds
Power-up: Red, yellow, green, flash sequence
Tamper : Red, yellow, green flash sequence every 12 seconds

DSC WS4936 Product Mounting:

Installation Do's:

In all sleeping rooms and guest rooms.
Outside of each separate dwelling unit sleeping area, within 6.4 m (21 ft) of any door to a sleeping room, the distance measured along a path of travel.
On every level of a dwelling unit, including basements.
On every level of a residential board and care occupancy (small facility), including basements and excluding crawl spaces and unfinished attics.
In the living area(s) of a guest suite.
In the living area(s) of a residential board and care occupancy (small facility).

Installation Dont's:

Do not locate smoke detectors at the top of peaked or gabled ceilings; the dead air space in these locations may prevent the unit from detecting smoke.
Avoid areas with turbulent air flow, such as near doors, fans or windows. Rapid air movement around the detector may prevent smoke from entering the unit.
Do not locate detectors in areas of high humidity.
Do not locate detectors in areas where the temperature rises above 38®C (100®F) or falls below 5®C (41®F).
Smoke detectors must always be installed in USA in accordance with Chapter 29 of NFPA 72, the National Fire Alarm Code: 29.5.1.1.