There should be a way to allow you to call Dahua VTH via a sip server. The unit can be linked to a mag lock or strike lock. It also has the option to push to exit out. Set up your face or fob walk up to it and the door opens.
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Dahua VTO2311R-WP HD 1080P Wi-Fi Villa Door Station Access Control Systems H.265 Two-way Audio
Aliexpress UK
> IR illumination and night vision. > Two-way audio and voice call through app. > Supports wireless network. Field of View. > IP65 (Silicone sealant is need. For details, see the quick start guide.).
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Metal Magnetic Door Sensor contact Switch for shutter door window gate GSM alarm access control
Aliexpress UK
Dahua VTM22A Horizontally 15° Inclined Bracket for VTO1000J Door Station. Dahua VTH5341G-W 10" TFT Screen Digital Indoor Monitor Doorbell Video Intercom. Dahua VTM23A Vertically 5° Inclined Bracket for VTO1000J Door Station.
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Wifi TUYA 1080P 7/10 inch Touch Screen Video Intercom Access Control Video Doorbell System Doorphone
Aliexpress UK
> IP65 rated. Wi-Fi Villa Door Station. Built-in speaker. 0 m–3,000 m (0 ft–9,842.51 ft). Wireless Frequency Range. Included: Alarm power ribbon cable, rain cover. 10%–90% (RH), non-condensing. –40 °C to +55 °C (–40 °F to +131 °F).
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Dahua 1080P PoE Wi-Fi Video Intercom Kit 10inch Touch Monitor Wireless Video DoorPhone Doorbell
Aliexpress UK
ASI7213YO-V3-T0 Dahua Oem Cognitio Facial Recognition Door Access Controller New. Condition is New. Dispatched with Royal Mail Tracked 48.
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Dahua Original 2-Wire Video Intercom Kits Home Digital Doorbell Set 1080P Doorbell VTO2202F-P-S3 7"
Aliexpress UK
Original Dahua KTW02 Door station IP & Wi-Fi Indoor Monitor Video intercom. Dahua Original VTO2202F-P-S2 2-wire IP Villa Door Station Outdoor Video Intercom. Dahua VTO1301R-W WiFi Two-way Audio Video Wireless Villa Door Station Doorbell.
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125KHz RFID Access Control Keypad EM Card Reader Door Access Control System Door Lock Opener
Aliexpress UK
Here’s an overview of its features and specifications Exceeding Threshold (e.g., too many failed access attempts). Anti-Passback : Prevents a person from passing their access card to another person to gain unauthorized entry.
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Automatic Door Electric Glass Door Access Control Machine Track Full Set of Accessories S168
Aliexpress UK
Power Consumption. Door Status Detection. Communication is always the best way to solve problems. If you are satisfied with our products, we also hope you can give us a 5-star review. I will be very grateful.
eBay
Dahua Multi-language VTO2202F-P-S2 PoE(802.3af) IP Metal Villa doorbell ,Door Phone,doorbell,IP
Aliexpress UK