r-tec Coded Access (Keypad)

Overview

r-tec Coded Access is a keypad-based entry panel that provides door opening with PIN code. It offers authorisation without key/card for garden gate, barrier, industrial door and office entrance. Managed access control with multi-user code support + LOG recording (premium variant).

How does it work?

1. User enters PIN code (e.g. 1234)
2. Presses # key or auto-verification when code is fully entered
3. Correct code → green LED + buzzer tone → door open contact closes
4. Wrong code → red LED + warning tone → door does not open
5. 3 consecutive wrong → 30 sec lockout (brute-force protection)

PIN length selection

Length	Combination count	Typical use
4 digit	10 000	Residence garden (low security)
5 digit	100 000	Office + standard workplace
6 digit	1 000 000	Industrial + security priority
8 digit	100 million	Banking + military site

→ 4-5 digits is sufficient for standard residence; 6 digits is mandatory at industrial/security critical sites.

Multi-user management

With the master code (owner + manager), 100 different user codes can be added and deleted:

• Main owner code (1 piece, immutable)
• Authorised codes (99 pieces, addable and deletable)
• Temporary code (time-limited, premium variant)

Example use:

• Villa: family members (5-10 codes) + cleaning personnel (1 temporary code, weekend)
• Office: employees (50+ codes, deleted on leaving)
• Industrial: shift operators (bulk update at shift change)

LOG record (premium variant)

The premium variant records last 50 timestamped entries:

• Which code was entered (user ID)
• When (hour:minute date)
• Successful / failed

→ Critical for security audit or lost key/code tracking. The standard variant does not LOG record (only works in real-time).

Key/card vs password — advantage

Authorisation	Advantage	Risk
Physical key	Intuitive use	Lost/stolen → lock change
Card	Easy management	Lost → card deactivation + new card cost
PIN password	No loss, no key	Code sharing risk (training required)

→ At sites with frequent personnel changes, coded access = no additional card management cost.

Target projects

• Villa and estate garden gate (family + cleaning code)
• Apartment common entry (resident code)
• Small office + workplace side door
• Industrial shift control
• Sports facility changing room entry
• Rental flat entry (code renewal at tenant change)

Field discipline

• Master code confidentiality — Nobody outside owner/manager should know; default master “0000” is not left unchanged
• Code length selection — 4-8 digit decision based on site
• Key wear — Frequently used keys wear out in 2-3 years; worn keys = code guessing risk
• Periodic code change — Master code renewal every 6 months + user code renewal every 12 months recommended
• LOG audit — Premium variant LOG check every 3 months; suspicious attempts monitored
• Rain tightness — IP54; upper canopy recommended outdoors
• Emergency backup access — Mechanical key backup (stored with owner + dealer) in case of PIN loss