Fire sprinkler color TVI covert hidden spy camera This covert fire sprinkler cameras is equipped with 3.7mm pinhole lens. For this hidden camera we have sold at the most competitive price and offer the best after-sale service. Reliable security camera system with free technical support and two years warranty. Features: Fire sprinkler color TVI camera 3.7mm pinhole lens Drop ceiling mount Built-in microphone Includes: 1x covert & mini cameras 1x user's manual 1x installing accessories Packing details: 1 piece in a color box, 168pcs per carton Carton dimension: 42x52x46cm Gross weight: 18kg Delivery lead time: Samples can be delivered in 2-3 working days after payment received. Mass product lead time depends on your order quantity.