The WS4938 is compatible with all of DSC's current wireless receivers and uses reliable 433MHz wireless technology. The WS4938 uses long-life lithium batteries that are installer activated via a switch located inside the unit, a feature that helps maximize battery life. ![]() It is especially valuable for sick or elderly users, so that they can quickly and easily call for help in the event of an emergency. If the receiver does not receive a transmission signal after a programmed length of time, a trouble signal is sent to the GeoArm central station. The WS4938 is a supervised wireless device and sends periodic transmission signals to its wireless receiver to indicate functionality and battery life. To ensure easy emergency access, the WS4938 includes a neck strap and a multifunction clip that can be mounted in a convenient location or worn on a belt, car visor. The battery may simply have discharged, and will recharge when the electricity comes back on. If you’ve recently had a power outage, wait 24-48 hours after power is restored. A red LED indicator flashes after transmission to indicate that the alarm was sent. Battery Trouble If your DSC home alarm is beeping due to this condition, the main panel battery is low or failing. ![]() The WS4938 is activated by a large, clearly defined button that must be held for full two-seconds to eliminate false alarms. When the central station receives an emergency panic alarm, they immediately contact the proper authorities to dispatch on the panic alarm without any call verification needed. The LED located on the top of the unit will light up to confirm a signal has been sent. To activate the WS4938 button, press and hold the button for approximately 2 seconds. The WS4938 wireless panic button is small and lightweight enough to be placed in a shirt pocket or tucked away inside a purse. Weight 9including battery): 470g (16.The DSC WS4938 is a single button personal panic button that gives all users the ability to instantly send in an emergency alarm signal from anywhere in the home. It is a large 12 volt battery and is easy to replace. 93%RH, non-condensing (UL/ULC only verified up to max 85%RH)ĭimensions (LxWxD): 161x161x50mm (6-7/16 x 6-7/16 x 1-3/4 in) A: The main back-up battery is located in the alarm panel, usually located in a closet. Temperature range: -10C to +55C (UL/ULC only verified the range 0-49C) Low Battery Threshold: 2V +300 mV negative slope OR 1.2V Note: The strobe flashes 5 times and the red LED lights continuously during first battery installationīattery Life Expectancy: 8 years (not verified by the UL/ULC) ![]() Sound Pressure Level 1m, 1400Hz-3200Hz, sweep frequency 7Hzīattery Type: 3.6V/14.5A/H Lithium battery (EVE ER34615/w200) (not verified by UL/ULC) It has a light-weight casing that measures 6-7/16 x 6-7/16 x 1-3/4 in and has an aesthetically pleasing design.Īlarm Sound Level: 85 dB at 3 m (10 feet)įrequency Band (MHz): CE Listed PG4901: 433MHz CE/EN listed PG8901: 868MHz FCC/IC/UL/ULC listed PG9901: 915MHz It features a built-in antenna and weighs 16.5 oz. It operates on the 915 MHz wireless frequency and can pair with any PowerG Series alarm system. If you need a wireless indoor siren for any PowerG Series alarm system, like the DSC NEO, then the PG9901 would be the siren to purchase. This attractive, compact and water resistant panic key can be worn around the neck or permanently mounted/clipped to a belt with the multifunction clip. The DSC PG9901BATT is a combination of the PG9901 Indoor Siren and the long-life lithium battery that powers it.
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