The SLD 400 was designed to detect and locate optical or optronic scopes used by snipers, and sight systems on the battlefield.
Presentation 
The SLD 400 detects all optical systems aimed at the detector, often associated with an immediate threat (i.e. snipers). The detector can survey extensive areas by scanning them. The SLD 400 is able to detect threats with a very high level of accuracy which makes it compatible with complementary fire control systems.
Designed to be fitted on a fixed mount, a tripod or a static vehicle, it can be used on the battlefield or in an urban setting for the following purposes:
- active and passive detection of optical and optronic scopes;
- enhancing the speed and accuracy of shooting at a pointed optic;
- active scanning and searching with automatic display on a remote screen.
The SLD 400 consists in:
- an optical head with a laser transmitter/receiver assembly;
- an electronic suitcase with the controls, processing and visualization of the observed landscape;
- a rechargeable battery power source.
Characteristics 
Eye safety: Class I with attenuating filter
Field of observation: variable from 4° to 30°
Scanning: manual 0° to 355°; automatic (mains power) 60°
Consumption: 100 W
Weight of the optical head: 7 kg
Options
Can be coupled with other detection and surveillance systems (IR, acoustics, etc).
Applications 
The SLD 400 detector can be used for a host of end purposes:
As an essential tool for Armed Forces to neutralize elite snipers with a telescopic sight on a high-precision weapon. In fact, the monitoring and detecting of aiming devices is an integral part of the ongoing supervision of the battlefield.
As an essential tool by Special Forces where high-precision firing is a key part of their work against hostile pointed optics.
Protection of VIPs where Security Services have to constantly cope with the threat of an aggressor with a telescopic sight on a high-precision weapon.
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