The CTV-CR20 EM B (Model 283831) is an autonomous access control system controller featuring an integrated EM-Marin card reader. It supports up to 10,000 stored keys for efficient user management.
The reader operates at a distance of 5 to 8 cm, ensuring reliable card authentication. The device includes output connections for straightforward integration with access points.
CTV-CR20 EM B 283831 is listed to help buyers compare fit, application, and installation context before ordering.
Confirm the practical fit with the project scope, service conditions, and manufacturer documentation.
Safsale lists it within Autonomous controllers for buyers sourcing electrical, security, and low-voltage products in the US market.
For replacement work, compare the existing part number, electrical requirements, mounting conditions, and installation environment. That extra check is useful for contractors, maintenance teams, and technical buyers evaluating CTV-CR20 EM B 283831 under project deadlines.
Reviews: 2
Average score: 5
Electrical Contractor
13/05/2026
Installed the CTV-CR20 EM B on a mid-sized office project to control door access. The integrated EM-Marin reader worked reliably within the specified 5 to 8 cm range. Programming up to 10,000 keys was straightforward using the provided interface. The output connections fit well with our existing door strike wiring. Overall, it met the project requirements without issues and was easy to integrate into the system.
Installer
17/08/2025
Installed the CTV-CR20 EM B for a small office access control upgrade. The integrated EM-Marin reader worked well with existing cards, and the unit stored all user keys without issue. Setup was straightforward and wiring to door hardware was simple. The 5-8 cm read range proved reliable during daily use, making it a practical choice for this site.
Questions: 3
Safsale Product Desk
28/03/2025
What should be compared with the project documentation?
The administration's response:
Compare the product name, full model number, rating values, dimensions, mounting notes, and connection details with the project documentation. This helps keep the selection process tied to documented specifications rather than only the product title.
Safsale Product Desk
30/10/2024
Can this item be considered for replacement planning?
The administration's response:
This item can be considered during replacement planning when the full model number, dimensions, ratings, and connection details match the existing part record. For critical equipment, review the datasheet and project notes before purchase because similar models may have small specification differences.
Safsale Product Desk
07/08/2024
Can similar-looking models have different specifications?
The administration's response:
Yes. Similar model names can still differ by size, rating, mounting style, finish, connector detail, or revision number. Compare the complete product reference and datasheet details before treating two catalog items as interchangeable.
