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RISCO’s internal sounder is an aesthetically designed, fully wireless unit designed for residential applications which extends the sounding of the alarm into the indoor environment and can be used to scare off intruders.

Being fully two-way, the internal sounder can be mounted in a central location inside the premises close to where the user resides with the control panel safely installed out of the sight of intruders..

A unique feature of the sounder includes a pre-alarm feature that starts an entry delay countdown and sends an alarm if RISCO Group’s wireless systems are vandalized during entry delay.


Power Supply 5 X CR123, 3V Lithium Battery (3 batteries for the Radio
Transceiver, 2 batteries for the Speaker
Battery life 3 years (typical)
Speaker sound level dB @ 1 meters (adjustable)
Size (Ø&D) Ø183 x 51 mm
Weight (batteries not included) 0.34Kg
Radio type Two Way Narrow band
Frequency 868 MHz or 433MHz
Range up to 150m (492’) Line of sight
Supervision Yes
Modulation Type ASK
Temperature - 10°C to 55°C
IP Rating IP 31, IK 06
Environmental Class Class II
Standards EN50131-4, Grade 2 Environmental Class II
EN50131-6 Type C

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