Gemini P1664
  • 8 hybrid zones on-board including two 2-wire fire zones in large, locking enclosure (12.5" x 14" x 3.75")
  • With multiplexing, can accommodate up to 64 EOL zones (from alpha keypads or multiplex modules, including the low-cost GEM-EZM4/8 Expansion Module).
  • Programmable partitioning for 4 areas
  • Up to 64 users
  • Uses all the standard Gemini crystal-control wireless
  • Uses all the standard Gemini keypads, new DK-Series door-style keypads and multifunction VPS Series talking keypads (shown above)
  • Two money-saving paks with custom alpha door keypad GEMP1664DK1PK; or with multifunction GEMK1VPS keypad with built-in talking voice, PIR and UL siren, GEMP1664VPSPK

The GEM-P1664 Hybrid 8 to 64-Zone Control/Communicator features 8 zones expandable to 64 zones with multiplexing and supports all standard Gemini RP and K-Series Keypads, plus new Gemini DK-Series Door-Style Keypads and new VPS Series talking multifunction keypads, as well as reliable, NAPCO Gemini crystal-control transmitters and receivers, too. Supporting up to 64 user codes and 16 relays, the GEM-P1664 control features easy menu drivenSelf-Programming Plus keypad programming (for all zones), which includes new alpha keypad question-prompts, even for setting test timer, fire zones and exit/entry and follower zones. Additionally, the panel can be remote up/downloaded using easy-to-use NAPCO Quickloader Software.

New money saving pak! GEMP1664DK1PK, with new door style keypad and new Gemp1664 panel
New money saving GEMP1664VPSPK - P1664 panel with multifunction talking keypad


  • 8 Hardwire/Wireless Zones on board
  • Up to 64 zones with multiplex expansion including 2 two 2-wire fire zones
  • With multiplexing, can accommodate up to 64 EOL zones (from custom alpha keypads or multiplex modules)
  • EZ Programming2 More comprehensive, menu-driven programming for all zones plus test timer.
  • Up to 64 user codes
  • Up to 4 areas
  • 3 on-board outputs, up to16 external relay outputs (RM3008s).
  • Up to 2 NAPCO helically-filtered, crystal-control RF receivers
  • Interior bypass group with programmable automatic interior bypass
  • 400 event log
  • Auto Arm

  • Uses up to 7 of any of the Classic/RP-, K-Series or DK-Door Style Stay & Away keypads
  • Programmable telephone line cut supervision with delay
  • 3 Keypad panics (F, P, A)
  • Supports all major communicator formats, including: 4/2, SIA, 4+2 and Point ID, plus pager
  • Backup/double/split reporting; three 20-digit telephone numbers
  • Dynamic battery test
  • Reports alarms, restores and troubles by zone.
  • 2 programmable entry delay times
  • Chime by zone
  • 8 EOL burglary zones programmable for area, E/E delay, interior, follower, day zone, chime, fire options, sensor watch, swinger shutdown, cross zoning , etc.
  • Multiplex Expandability with GEM EZM4/8 or GEM EZM8 zone expansion modules
  • Quickloader up/downloading, including unique unattended method
  • Choice of RF receivers
  • Partitioning by area
  • Event log with open/close suppression
  • Event log viewable at keypad (total log, burglar alarm log, fire alarm log, system trouble log, o/c log)
  • Cellphone-style keypad programming of zone descriptions ( text)
  • Programmable 50Hz Clock Setting
  • Programmable Daylight Savings Time
  • Programmable Security Bypass (code required for bypass)
  • Un-Bypassing while disarmed (code required)
  • Temperature Display at Keypad (-30 to 600C Celsius or -22 to 1400F Fahrenheit) with optional GEM-TEMP64 Indoor/Outdoor Temperature Sensor (Note: Keypad Temperature Display replaces Date on Display and is for use with custom alphanumeric keypads, only, i.e., DK1, K1, RP1)
  • Programmable High/Low Temperature Alarm Reporting (requires feature enabled; zone 6)
  • 24 Hour day zone trouble
  • Programmable Swinger Shutdown (2 or 3 activations – selectable)
  • Zone Anding/Cross Zoning (Grouping of zones in which sequential zone activation is required to generate an alarm)
Compatible Napco keypads with the new Gem-P1664 panel


Input Power: 16.5-18.0 VAC via Class 2 Plug-In 20VA, 40VA or 50VA Transformer
Loop Current: 3mA; 5mA for 2-wire smoke-detector zones
Loop Resistance: 300 Ohm max.; 50 Ohm for 2-wire smoke detector zones
Alarm Voltage Output: 1; Programmable Negative Outputs: 2
Auxiliary Power Output: 11.7-12.5 VDC
Remote Power Output: 12 VDC regulated
Combined Standby Current - See WI1501

UL Listings & Compliances:
Household Burglar Alarm System Units: UL1023
Household Fire Warning System Units: UL985
Security Industry Association (SIA) False Alarm Reduction Standard CP-01


GEM-P1664 Panel New! 8 to 64 zone, 4 partition control panel in large locking enclosure, 12.5 x 14 x 3.75”. (Plug-in AC transformer, supplied).

GEM-K1VPS talking keypad New! Labor-saving, multifunction, talking custom alphanumeric keypad with built in pet-PIR, UL siren, and spoken voice-prompts. Dual-line blue display and built in 4-zone expansion module. Stay/away user functionality.

GEMP1664VPSPK New! Money-saving pak with P1664 panel and multifunction talking custom alpha blue backlit keypad with built-in 4 zone expander, pet PIR, UL siren. Stay/away user functionality. Supplied AC transformer.

GEM-DK1CA door keypad New! Door-style deluxe custom alphanumeric dual-line blue display keypad with built in 4-zone expansion module. Stay/away user functionality.

GEMP1664DK1PK New! Money-saving pak with P1664 panel and door-style DK1CA custom alpha blue backlit keypad with built-in 4 zone expander. Stay/away user functionality. Supplied AC transformer.

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