The 1837 90 Series stores up to 3000 phone numbers and 8000 device codes and can be expanded to control up to 48 wired access points with optional Tracker Expansion boards (up to 24 wirelessly). The 90 Series housing offers a streamlined look, has enhanced locking and weather sealing and provides easy internal installation of optional components such as a card reader, LCD heater and TCP/IP adapter for a direct internet connection. The 1837 is still available in the original 80 Series (surface and flush mount) housings, click the button below to view the 80 Series product page.

• True Full Duplex communication.
• Stores up to 3000 telephone numbers and names (names are limited to 15 characters max).
• Transaction buffer stores last 8000 events.
• Stores up to 8000 device (card) codes.
• 31 Security (permission) Levels, 29 programmable with 4 time zones each.
• 8 hold open time zones.
• Three anti-pass back configurations: passive, active and trap.
• Elevator control (note 1) for up to 8 elevators, each serving 64 floors.
• Expandable (note 2) to control up to 48 wired entry points (or 24 wirelessly).
• 4-digit entry codes, one for each telephone number.
• 3 form “C” dry contact relays.
• Eight-line directory display uses super-twist LCD with 1/2-inch characters.
• EEPROM memory chip.
• 16 VAC, 20 VA and 16 VAC, 50 VA power transformers supplied.
• FCC (US): DUF6VT-12874-OT-T
• DOC (CAN): 1736 4528 A
• Compliant with UL 294.   ETL listed.

• Large easy to use A and Z scroll buttons.
• One Touch “CALL” button.
• Built-in eight-line LCD directory display.
• Programmable directory codes (1-4 digits).
• 10 and 11-digit dialing capability.
• Interfaces with 2 card readers – expandable to 48 with wired tracker expansion boards (or 24 wirelessly).
• Live Streaming.
• Live transactions.
• Anti-pass back.
• 8000 event transaction buffer.
• Elevator control – requires elevator control boards(s)
• 31 Security (permission) Levels – 29 Programmable (2 fixed levels).
• Database import/export capability.
• Built-in clock/calendar.
• Holiday schedule.
• Hold open time zones.
• Entry code time zones.
• Built-in postal lock provision.

• Cellular powered by AT&T 4G LTE
• Internet select DK VoIP or your own VoIP provider
• POTS Plain Old Telephone service 2
  1. Connection options noted will incur additional cost for required hardware and/or service subscriptions. DKS Cloud programming included at no charge with DKS connection subscriptions.
  2. POTS connection is not recommended for programming.

• Environmental: 10° F to 145° F (-12° C to 62° C)
• Heater kit (P/N 2600-584) recommended when temperatures routinely fall below 35° F (1.6° C)
• Optional high-resolution camera kits additional CCV equipment and cabling required
• Shipping weight approximately 20-25 lb (9-11 kg) 1837 90
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