Silent Knight is Honeywell's fire alarm line for small and mid-sized commercial buildings, installed widely by fire and security contractors across the US. The range runs from addressable and conventional control panels through SLC loop expanders, intelligent power supplies, digital and cellular communicators and LCD remote annunciators to the field devices themselves.
What we stock here:
- Silent Knight smoke detectors - photoelectric, combination smoke and carbon monoxide, and heads with remote test capability
- Heat detectors, including fixed temperature and rate of rise types
- Duct smoke detectors and replacement duct housing covers
- Monitor, mini monitor, relay and addressable control modules
- Single and dual action pull stations, break rods and cabinet keys
- Detector bases, including relay and sounder bases
Silent Knight panels stay in service for decades, so we also keep discontinued and superseded parts for older installations that are not being replaced. If the Silent Knight part you need is not listed, request it on our quote page.

Silent Knight
Silent Knight SKE-450ZN4 Voice Evac Panel 50 Watt, W 4 Zone Splitter
Sale price$2,906.50
Regular price$3,487.80
Not in stock - available on backorder - lead time on request
Silent Knight
Silent Knight 005824 Serial Parallel Printer Interface Module
Sale price$349.60
Regular price$419.52
Not in stock - available on backorder - lead time on request
Silent Knight
Silent Knight CELL-ANT3DB Weatherproof External 4G/LTE Cellular Antenna Kit
Sale price$178.85
Regular price$214.62
Not in stock - available on backorder - lead time on request
Silent Knight
Silent Knight SKE-ZN6 Voice Evac Zone Splitter
Sale price$746.75
Regular price$896.10
In Stock
Silent Knight
Silent Knight 005815RMK Cabinet Accessory
Sale price$140.35
Regular price$168.42
Not in stock - available on backorder - lead time on request
Silent Knight
Silent Knight SKE-450 Voice Evacuation Panel 50 Watt
Sale price$2,211.25
Regular price$2,653.50
Not in stock - available on backorder - lead time on request
Silent Knight
Silent Knight Ps-smbb Back Box for Use with SD500PS and SD500PSDA, Surface Mount
Sale price$47.50
Regular price$57.00
In Stock
Silent Knight
Silent Knight SK-DUCT Intelligent Air Duct Smoke Detector
Sale price$282.60
Regular price$339.12
Only 5 units left
Silent Knight
Silent Knight SD505-T5 5 FT Sampling Tube SD505-DUCT/DUCTR
Sale price$53.80
Regular price$64.56
Only 1 unit left
Silent Knight
Silent Knight SK-DP2/4 Dress Panel Accessory
Sale price$69.70
Regular price$83.64
In Stock
Silent Knight
Silent Knight 005895XLCB Cabinet Assembly
Sale price$264.80
Regular price$317.76
Only 5 units left
Silent Knight
Silent Knight 00PLEX-2 Premium Plexiglass
Sale price$220.70
Regular price$264.84
In Stock
Silent Knight
Silent Knight ECS-LOC ECS Local Operating Console Red
Sale price$2,057.45
Regular price$2,468.94
Not in stock - available on backorder - lead time on request
Silent Knight
Silent Knight SD505-NSRT-RH Disassembly Tools
Sale price$628.50
Regular price$754.20
Only 19 units left
Silent Knight
Silent Knight PS-DASP Pull Station Dual Action Spanish
Sale price$47.05
Regular price$56.46
In Stock
Silent Knight
Silent Knight SK-SCK Seismic Mounting Kit Accessories
Sale price$201.15
Regular price$241.38
In Stock
Silent Knight
Silent Knight ECS-50WHV 50-Watt Amplifier 220VAC
Sale price$1,095.45
Regular price$1,314.54
Not in stock - available on backorder - lead time on request
Silent Knight
Silent Knight ECS-RCU2000 Remote Command Unit
Sale price$1,929.50
Regular price$2,315.40
Not in stock - available on backorder - lead time on request
Silent Knight
Silent Knight ECS-RCU Remote Command Unit
Sale price$2,039.55
Regular price$2,447.46
Not in stock - available on backorder - lead time on request
Silent Knight
Silent Knight ECS-LOC2100B Local Operating Console Black
Sale price$2,093.20
Regular price$2,511.84
Not in stock - available on backorder - lead time on request
Silent Knight
Silent Knight ECS-DUAL50WB Amplifier 50/100 Watt Dual Channel
Sale price$2,790.95
Regular price$3,349.14
Not in stock - available on backorder - lead time on request


