We need to purchase 5 units of 4CH HDTVI video/audio fiber converters with black aluminum housing. The devices must support high-definition transmission and integrate 4in1 functionality.  
Please specify the maximum megapixel resolution supported by your latest version.  
Priority will be given to suppliers offering:  
1. Verified quality equivalent to existing market solutions  
2. Technical specifications matching modern surveillance requirements  
3. Competitive pricing for small quantity orders

We need basic USB sound cards to integrate with our newly developed mobile recording application. The device should support clean audio recording functionality through standard USB connectivity. Looking for reliable suppliers who can provide compatible solutions for app-based recording scenarios.

We require a non-inspection system for 4 independent workstations connected via LAN. Each workstation must include:
1. 55" 4K Display with logo presentation, dynamic guiding lines, and alarm functions
2. HD Camera with vehicle detection (no false human triggers)
3. Voice input device
4. Report printer

System must show real-time correction arrows and trigger audible alert for severe misalignment. Central system should manage all workstations. Suppliers must provide technical proposal with implementation details, pricing, and delivery timeline.

Looking for 1 set of wireless tour guide system with 1 transmitter and 20 receivers.  
Requirement details:  
- Single channel operation for personal use  
- Battery-powered devices required  
- Payment methods: Cash or PayPal  
Please specify available delivery timelines and technical specifications.

Search for a COFDM solution for patrolling on roads through vehicles and send the live video and audio to the control room. Request to propose the devices required for this complete solution. Budget is not the restriction. Need at least 5 devices in the initial phase and it could extend to 50 and more in the future. Preferred delivery time is as soon as possible.

I need a quotation for 7500 reciever and 300 transmitter   that have at least 150m coverage and all accessories of microphones and headsets and the charge cases for the whole system