DSC WS4920 User Manual

1
Specifications
• Temperature range: -10°C to +55°C (14°F-131°F)
Note: UL/ULC tested for 0°C to +49°C (32°F to
122°F), 85%R.H.
• Humidity (Max): 5% - 93% R.H. non-condensing
• Battery type: Rechargeable Ni-MH, 4.8V/2.1 AH (UL
Listed as an LPS. Replace battery every 3-5 years)
• Battery backup time: 24 hours
• Battery charging rate: 80% within 24 hours
• Battery charging current: 170mA
• Operating frequency: 433.92 MHz
• Dimensions: H6.96, W4.47, D1.33
in. (H17.68, W11.35, D3.38 cm)
• Weight: .77 lb. (.35kg)
Note: The built-in wall and case
tamper shall be installed and enabled
for UL/ULC Listed Commercial
Burglary applications.
Transformer requirements:
Plug-In Class II power limited transformer (fused)
Primary: 120VAC, 60Hz, 0.2A (UL/ULC listed installations)
230VAC, 50Hz, 0.1A (International Market. Acceptable to the local authorities)
Secondary: 16VAC-18VAC, 20VA
The following plug-in transformers shall be used:
USA: PTD1620U, UL, CC5, efficiency level IV, 16.5V, 20VA
(UL listed installations)
Canada: PTD1620N, C-UL certified, 16.5V 20VA (ULC listed installations)
Europe: PTD1620T-EU, CE approved 230V/16.5V 20VA
Maximum allowed wire run distances:
Only UL listed devices can be used in UL Commercial Burg listed installations: WS4904(P),
WS4945CB , WLS912L-433, WS4939. The repeater shall be used in conjunction with
Wireless Repeater Model RF5132-433 and Alarm Control Panel models: PC1864, PC1832 or
PC1616. WS4920 is UL listed for Residential Fire, Residential Burglary and Commercial
Burglary applications in accordance with the following standards:
• UL985 Household Fire Warning System Units
• UL1023 Household Burglar-Alarm System Units
• UL1610 Central Station Burglar-Alarm Units
AWG Feet Meters
24* 5.8 1.8
22 9.3 2.8
20 14.8 4.5
18 23.5 7.2
* Not to be used for UL
listed Installations

DSC WS4920 Specifications

General

Product color	White
Compatible products	ALEXOR, PowerSeries 9045/47, PowerSeries PC1616/PC1832/PC1864, . MAXSYS PC4010/PC4020 PC5132/RF5132/RF5108/. RFK5500/RF5501, MAXSYS RF4164 WS4945, WS4975 WS4904, WS4904P, WLS914-433 WLS912L-433 WS4913 WS4916 WS4938, WS4938-2W WS4939 WS4979
Battery low indication	Yes
RF transmission frequency	433.92 MHz
Number of devices supported	164
Operating temperature (T-T)	-10 - 55 °C
Operating relative humidity (H-H)	5 - 93 %
Input voltage	120 V
Battery voltage	4.8 V
Input frequency	50 Hz
Built-in battery	No
Operating current	0.1 A
Power source type	AC, Battery
Battery technology	Nickel-Metal Hydride (NiMH)

Weight and Dimensions

Depth	33.8 mm
Width	113.5 mm
Height	176.8 mm
Weight	- g